<QC Comment="Quality check run by the RGP Dream Team"
    Date="2012-06-19 00:00:00"
    DayOfYear="171"
    Year="2012">
  <station name="CHEB">
    <file name="/cheb1710.12o"
          error="0"
          interval="30"
          session="0">
      <control date="Thu Jun 21 01:50:46 2012"
               level="3">
        <file_statistics latency="02:31:41"
                         size="2994837"
                         time_creation="Wed Jun 20 01:33:58 2012"
                         time_modification="Wed Jun 20 01:31:11 2012" />
        <observations epoch_first="Tue Jun 19 00:00:00 2012"
                      epoch_last="Tue Jun 19 22:59:30 2012"
                      epochs="2645"
                      epochs_ratio="91.84">
          <mask elevation="03 degrees"
                obs_expected="28304"
                obs_have="22493"
                obs_ratio="79.47" />
          <mask elevation="10 degrees"
                obs_expected="23427"
                obs_have="22473"
                obs_ratio="95.93" />
          <mask elevation="15 degrees"
                obs_expected="20580"
                obs_have="19792"
                obs_ratio="96.17" />
        </observations>
      </control>
      <control date="Thu Jul 19 10:33:22 2012"
               level="3">
        <file_statistics latency="02:31:41"
                         size="2994837"
                         time_creation="Tue Jul 17 01:08:54 2012"
                         time_modification="Wed Jun 20 01:31:11 2012" />
        <observations epoch_first="Tue Jun 19 00:00:00 2012"
                      epoch_last="Tue Jun 19 22:59:30 2012"
                      epochs="2645"
                      epochs_ratio="91.84">
          <mask elevation="03 degrees"
                obs_expected="28304"
                obs_have="22493"
                obs_ratio="79.47" />
          <mask elevation="10 degrees"
                obs_expected="23427"
                obs_have="22473"
                obs_ratio="95.93" />
          <mask elevation="15 degrees"
                obs_expected="20580"
                obs_have="19792"
                obs_ratio="96.17" />
        </observations>
      </control>
    </file>
    <file name="/cheb171a.12o"
          error="0"
          interval="1"
          session="a">
      <control date="Tue Jun 19 01:22:41 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="4184757"
                         time_creation="Tue Jun 19 01:13:09 2012"
                         time_modification="Tue Jun 19 01:10:09 2012" />
        <observations epoch_first="Tue Jun 19 00:00:00 2012"
                      epoch_last="Tue Jun 19 00:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35686"
                obs_have="31498"
                obs_ratio="88.26" />
          <mask elevation="10 degrees"
                obs_expected="31489"
                obs_have="31443"
                obs_ratio="99.85" />
          <mask elevation="15 degrees"
                obs_expected="29166"
                obs_have="29166"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 01:52:30 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="4184757"
                         time_creation="Tue Jun 19 01:13:09 2012"
                         time_modification="Tue Jun 19 01:10:09 2012" />
        <observations epoch_first="Tue Jun 19 00:00:00 2012"
                      epoch_last="Tue Jun 19 00:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35686"
                obs_have="31498"
                obs_ratio="88.26" />
          <mask elevation="10 degrees"
                obs_expected="31489"
                obs_have="31443"
                obs_ratio="99.85" />
          <mask elevation="15 degrees"
                obs_expected="29166"
                obs_have="29166"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 03:38:28 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="4184757"
                         time_creation="Tue Jun 19 01:13:09 2012"
                         time_modification="Tue Jun 19 01:10:09 2012" />
        <observations epoch_first="Tue Jun 19 00:00:00 2012"
                      epoch_last="Tue Jun 19 00:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35686"
                obs_have="31498"
                obs_ratio="88.26" />
          <mask elevation="10 degrees"
                obs_expected="31489"
                obs_have="31443"
                obs_ratio="99.85" />
          <mask elevation="15 degrees"
                obs_expected="29166"
                obs_have="29166"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="4184757"
                         time_creation="Tue Jun 19 01:13:09 2012"
                         time_modification="Tue Jun 19 01:10:09 2012" />
        <observations epoch_first="Tue Jun 19 00:00:00 2012"
                      epoch_last="Tue Jun 19 00:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35686"
                obs_have="31498"
                obs_ratio="88.26" />
          <mask elevation="10 degrees"
                obs_expected="31489"
                obs_have="31443"
                obs_ratio="99.85" />
          <mask elevation="15 degrees"
                obs_expected="29166"
                obs_have="29166"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="4184757"
                         time_creation="Tue Jul 17 01:02:43 2012"
                         time_modification="Tue Jun 19 01:10:09 2012" />
        <observations epoch_first="Tue Jun 19 00:00:00 2012"
                      epoch_last="Tue Jun 19 00:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35686"
                obs_have="31498"
                obs_ratio="88.26" />
          <mask elevation="10 degrees"
                obs_expected="31489"
                obs_have="31443"
                obs_ratio="99.85" />
          <mask elevation="15 degrees"
                obs_expected="29166"
                obs_have="29166"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171b.12o"
          error="0"
          interval="1"
          session="b">
      <control date="Tue Jun 19 02:21:50 2012"
               level="3">
        <file_statistics latency="00:10:09"
                         size="4146171"
                         time_creation="Tue Jun 19 02:13:08 2012"
                         time_modification="Tue Jun 19 02:10:08 2012" />
        <observations epoch_first="Tue Jun 19 01:00:00 2012"
                      epoch_last="Tue Jun 19 01:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35554"
                obs_have="31191"
                obs_ratio="87.73" />
          <mask elevation="10 degrees"
                obs_expected="31200"
                obs_have="31158"
                obs_ratio="99.87" />
          <mask elevation="15 degrees"
                obs_expected="26663"
                obs_have="26663"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 02:50:48 2012"
               level="3">
        <file_statistics latency="00:10:09"
                         size="4146171"
                         time_creation="Tue Jun 19 02:13:08 2012"
                         time_modification="Tue Jun 19 02:10:08 2012" />
        <observations epoch_first="Tue Jun 19 01:00:00 2012"
                      epoch_last="Tue Jun 19 01:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35554"
                obs_have="31191"
                obs_ratio="87.73" />
          <mask elevation="10 degrees"
                obs_expected="31200"
                obs_have="31158"
                obs_ratio="99.87" />
          <mask elevation="15 degrees"
                obs_expected="26663"
                obs_have="26663"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 04:56:23 2012"
               level="3">
        <file_statistics latency="00:10:09"
                         size="4146171"
                         time_creation="Tue Jun 19 02:13:08 2012"
                         time_modification="Tue Jun 19 02:10:08 2012" />
        <observations epoch_first="Tue Jun 19 01:00:00 2012"
                      epoch_last="Tue Jun 19 01:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35554"
                obs_have="31191"
                obs_ratio="87.73" />
          <mask elevation="10 degrees"
                obs_expected="31200"
                obs_have="31158"
                obs_ratio="99.87" />
          <mask elevation="15 degrees"
                obs_expected="26663"
                obs_have="26663"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:10:09"
                         size="4146171"
                         time_creation="Tue Jun 19 02:13:08 2012"
                         time_modification="Tue Jun 19 02:10:08 2012" />
        <observations epoch_first="Tue Jun 19 01:00:00 2012"
                      epoch_last="Tue Jun 19 01:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35554"
                obs_have="31191"
                obs_ratio="87.73" />
          <mask elevation="10 degrees"
                obs_expected="31200"
                obs_have="31158"
                obs_ratio="99.87" />
          <mask elevation="15 degrees"
                obs_expected="26663"
                obs_have="26663"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:10:09"
                         size="4146171"
                         time_creation="Tue Jul 17 01:02:44 2012"
                         time_modification="Tue Jun 19 02:10:08 2012" />
        <observations epoch_first="Tue Jun 19 01:00:00 2012"
                      epoch_last="Tue Jun 19 01:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35554"
                obs_have="31191"
                obs_ratio="87.73" />
          <mask elevation="10 degrees"
                obs_expected="31200"
                obs_have="31158"
                obs_ratio="99.87" />
          <mask elevation="15 degrees"
                obs_expected="26663"
                obs_have="26663"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171c.12o"
          error="0"
          interval="1"
          session="c">
      <control date="Tue Jun 19 03:24:18 2012"
               level="3">
        <file_statistics latency="00:10:09"
                         size="4057129"
                         time_creation="Tue Jun 19 03:13:08 2012"
                         time_modification="Tue Jun 19 03:10:08 2012" />
        <observations epoch_first="Tue Jun 19 02:00:00 2012"
                      epoch_last="Tue Jun 19 02:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="30499"
                obs_ratio="94.13" />
          <mask elevation="10 degrees"
                obs_expected="30571"
                obs_have="30499"
                obs_ratio="99.76" />
          <mask elevation="15 degrees"
                obs_expected="29109"
                obs_have="29109"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 03:53:48 2012"
               level="3">
        <file_statistics latency="00:10:09"
                         size="4057129"
                         time_creation="Tue Jun 19 03:13:08 2012"
                         time_modification="Tue Jun 19 03:10:08 2012" />
        <observations epoch_first="Tue Jun 19 02:00:00 2012"
                      epoch_last="Tue Jun 19 02:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="30499"
                obs_ratio="94.13" />
          <mask elevation="10 degrees"
                obs_expected="30571"
                obs_have="30499"
                obs_ratio="99.76" />
          <mask elevation="15 degrees"
                obs_expected="29109"
                obs_have="29109"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 05:47:26 2012"
               level="3">
        <file_statistics latency="00:10:09"
                         size="4057129"
                         time_creation="Tue Jun 19 03:13:08 2012"
                         time_modification="Tue Jun 19 03:10:08 2012" />
        <observations epoch_first="Tue Jun 19 02:00:00 2012"
                      epoch_last="Tue Jun 19 02:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="30499"
                obs_ratio="94.13" />
          <mask elevation="10 degrees"
                obs_expected="30571"
                obs_have="30499"
                obs_ratio="99.76" />
          <mask elevation="15 degrees"
                obs_expected="29109"
                obs_have="29109"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:10:09"
                         size="4057129"
                         time_creation="Tue Jun 19 03:13:08 2012"
                         time_modification="Tue Jun 19 03:10:08 2012" />
        <observations epoch_first="Tue Jun 19 02:00:00 2012"
                      epoch_last="Tue Jun 19 02:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="30499"
                obs_ratio="94.13" />
          <mask elevation="10 degrees"
                obs_expected="30571"
                obs_have="30499"
                obs_ratio="99.76" />
          <mask elevation="15 degrees"
                obs_expected="29109"
                obs_have="29109"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:10:09"
                         size="4057129"
                         time_creation="Tue Jul 17 01:02:44 2012"
                         time_modification="Tue Jun 19 03:10:08 2012" />
        <observations epoch_first="Tue Jun 19 02:00:00 2012"
                      epoch_last="Tue Jun 19 02:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="30499"
                obs_ratio="94.13" />
          <mask elevation="10 degrees"
                obs_expected="30571"
                obs_have="30499"
                obs_ratio="99.76" />
          <mask elevation="15 degrees"
                obs_expected="29109"
                obs_have="29109"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171d.12o"
          error="0"
          interval="1"
          session="d">
      <control date="Tue Jun 19 04:31:05 2012"
               level="3">
        <file_statistics latency="00:10:11"
                         size="4506178"
                         time_creation="Tue Jun 19 04:13:21 2012"
                         time_modification="Tue Jun 19 04:10:10 2012" />
        <observations epoch_first="Tue Jun 19 03:00:00 2012"
                      epoch_last="Tue Jun 19 03:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36597"
                obs_have="33980"
                obs_ratio="92.85" />
          <mask elevation="10 degrees"
                obs_expected="34011"
                obs_have="33956"
                obs_ratio="99.84" />
          <mask elevation="15 degrees"
                obs_expected="30107"
                obs_have="30107"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:10:11"
                         size="4506178"
                         time_creation="Tue Jun 19 04:13:21 2012"
                         time_modification="Tue Jun 19 04:10:10 2012" />
        <observations epoch_first="Tue Jun 19 03:00:00 2012"
                      epoch_last="Tue Jun 19 03:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36597"
                obs_have="33980"
                obs_ratio="92.85" />
          <mask elevation="10 degrees"
                obs_expected="34011"
                obs_have="33956"
                obs_ratio="99.84" />
          <mask elevation="15 degrees"
                obs_expected="30107"
                obs_have="30107"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:10:11"
                         size="4506178"
                         time_creation="Tue Jul 17 01:02:45 2012"
                         time_modification="Tue Jun 19 04:10:10 2012" />
        <observations epoch_first="Tue Jun 19 03:00:00 2012"
                      epoch_last="Tue Jun 19 03:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36597"
                obs_have="33980"
                obs_ratio="92.85" />
          <mask elevation="10 degrees"
                obs_expected="34011"
                obs_have="33956"
                obs_ratio="99.84" />
          <mask elevation="15 degrees"
                obs_expected="30107"
                obs_have="30107"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171e.12o"
          error="0"
          interval="1"
          session="e">
      <control date="Tue Jun 19 05:25:39 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="3910874"
                         time_creation="Tue Jun 19 05:13:14 2012"
                         time_modification="Tue Jun 19 05:10:09 2012" />
        <observations epoch_first="Tue Jun 19 04:00:00 2012"
                      epoch_last="Tue Jun 19 04:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="33009"
                obs_have="29374"
                obs_ratio="88.99" />
          <mask elevation="10 degrees"
                obs_expected="29357"
                obs_have="29326"
                obs_ratio="99.89" />
          <mask elevation="15 degrees"
                obs_expected="26592"
                obs_have="26592"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 06:04:51 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="3910874"
                         time_creation="Tue Jun 19 05:13:14 2012"
                         time_modification="Tue Jun 19 05:10:09 2012" />
        <observations epoch_first="Tue Jun 19 04:00:00 2012"
                      epoch_last="Tue Jun 19 04:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="33009"
                obs_have="29374"
                obs_ratio="88.99" />
          <mask elevation="10 degrees"
                obs_expected="29357"
                obs_have="29326"
                obs_ratio="99.89" />
          <mask elevation="15 degrees"
                obs_expected="26592"
                obs_have="26592"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 07:26:21 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="3910874"
                         time_creation="Tue Jun 19 05:13:14 2012"
                         time_modification="Tue Jun 19 05:10:09 2012" />
        <observations epoch_first="Tue Jun 19 04:00:00 2012"
                      epoch_last="Tue Jun 19 04:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="33009"
                obs_have="29374"
                obs_ratio="88.99" />
          <mask elevation="10 degrees"
                obs_expected="29357"
                obs_have="29326"
                obs_ratio="99.89" />
          <mask elevation="15 degrees"
                obs_expected="26592"
                obs_have="26592"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="3910874"
                         time_creation="Tue Jun 19 05:13:14 2012"
                         time_modification="Tue Jun 19 05:10:09 2012" />
        <observations epoch_first="Tue Jun 19 04:00:00 2012"
                      epoch_last="Tue Jun 19 04:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="33009"
                obs_have="29374"
                obs_ratio="88.99" />
          <mask elevation="10 degrees"
                obs_expected="29357"
                obs_have="29326"
                obs_ratio="99.89" />
          <mask elevation="15 degrees"
                obs_expected="26592"
                obs_have="26592"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="3910874"
                         time_creation="Tue Jul 17 01:02:46 2012"
                         time_modification="Tue Jun 19 05:10:09 2012" />
        <observations epoch_first="Tue Jun 19 04:00:00 2012"
                      epoch_last="Tue Jun 19 04:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="33009"
                obs_have="29374"
                obs_ratio="88.99" />
          <mask elevation="10 degrees"
                obs_expected="29357"
                obs_have="29326"
                obs_ratio="99.89" />
          <mask elevation="15 degrees"
                obs_expected="26592"
                obs_have="26592"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171f.12o"
          error="0"
          interval="1"
          session="f">
      <control date="Tue Jun 19 06:34:46 2012"
               level="3">
        <file_statistics latency="00:10:11"
                         size="4194128"
                         time_creation="Tue Jun 19 06:13:16 2012"
                         time_modification="Tue Jun 19 06:10:10 2012" />
        <observations epoch_first="Tue Jun 19 05:00:00 2012"
                      epoch_last="Tue Jun 19 05:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36000"
                obs_have="31554"
                obs_ratio="87.65" />
          <mask elevation="10 degrees"
                obs_expected="31596"
                obs_have="31529"
                obs_ratio="99.79" />
          <mask elevation="15 degrees"
                obs_expected="26968"
                obs_have="26968"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 07:03:35 2012"
               level="3">
        <file_statistics latency="00:10:11"
                         size="4194128"
                         time_creation="Tue Jun 19 06:13:16 2012"
                         time_modification="Tue Jun 19 06:10:10 2012" />
        <observations epoch_first="Tue Jun 19 05:00:00 2012"
                      epoch_last="Tue Jun 19 05:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36000"
                obs_have="31554"
                obs_ratio="87.65" />
          <mask elevation="10 degrees"
                obs_expected="31596"
                obs_have="31529"
                obs_ratio="99.79" />
          <mask elevation="15 degrees"
                obs_expected="26968"
                obs_have="26968"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 08:15:49 2012"
               level="3">
        <file_statistics latency="00:10:11"
                         size="4194128"
                         time_creation="Tue Jun 19 06:13:16 2012"
                         time_modification="Tue Jun 19 06:10:10 2012" />
        <observations epoch_first="Tue Jun 19 05:00:00 2012"
                      epoch_last="Tue Jun 19 05:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36000"
                obs_have="31554"
                obs_ratio="87.65" />
          <mask elevation="10 degrees"
                obs_expected="31596"
                obs_have="31529"
                obs_ratio="99.79" />
          <mask elevation="15 degrees"
                obs_expected="26968"
                obs_have="26968"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:10:11"
                         size="4194128"
                         time_creation="Tue Jun 19 06:13:16 2012"
                         time_modification="Tue Jun 19 06:10:10 2012" />
        <observations epoch_first="Tue Jun 19 05:00:00 2012"
                      epoch_last="Tue Jun 19 05:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36000"
                obs_have="31554"
                obs_ratio="87.65" />
          <mask elevation="10 degrees"
                obs_expected="31596"
                obs_have="31529"
                obs_ratio="99.79" />
          <mask elevation="15 degrees"
                obs_expected="26968"
                obs_have="26968"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:10:11"
                         size="4194128"
                         time_creation="Tue Jul 17 01:02:48 2012"
                         time_modification="Tue Jun 19 06:10:10 2012" />
        <observations epoch_first="Tue Jun 19 05:00:00 2012"
                      epoch_last="Tue Jun 19 05:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36000"
                obs_have="31554"
                obs_ratio="87.65" />
          <mask elevation="10 degrees"
                obs_expected="31596"
                obs_have="31529"
                obs_ratio="99.79" />
          <mask elevation="15 degrees"
                obs_expected="26968"
                obs_have="26968"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171g.12o"
          error="0"
          interval="1"
          session="g">
      <control date="Tue Jun 19 07:52:42 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="4328576"
                         time_creation="Tue Jun 19 07:13:27 2012"
                         time_modification="Tue Jun 19 07:10:09 2012" />
        <observations epoch_first="Tue Jun 19 06:00:00 2012"
                      epoch_last="Tue Jun 19 06:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35384"
                obs_have="32612"
                obs_ratio="92.17" />
          <mask elevation="10 degrees"
                obs_expected="32579"
                obs_have="32562"
                obs_ratio="99.95" />
          <mask elevation="15 degrees"
                obs_expected="28137"
                obs_have="28137"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 09:17:23 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="4328576"
                         time_creation="Tue Jun 19 07:13:27 2012"
                         time_modification="Tue Jun 19 07:10:09 2012" />
        <observations epoch_first="Tue Jun 19 06:00:00 2012"
                      epoch_last="Tue Jun 19 06:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35384"
                obs_have="32612"
                obs_ratio="92.17" />
          <mask elevation="10 degrees"
                obs_expected="32579"
                obs_have="32562"
                obs_ratio="99.95" />
          <mask elevation="15 degrees"
                obs_expected="28137"
                obs_have="28137"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="4328576"
                         time_creation="Tue Jun 19 07:13:27 2012"
                         time_modification="Tue Jun 19 07:10:09 2012" />
        <observations epoch_first="Tue Jun 19 06:00:00 2012"
                      epoch_last="Tue Jun 19 06:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35384"
                obs_have="32612"
                obs_ratio="92.17" />
          <mask elevation="10 degrees"
                obs_expected="32579"
                obs_have="32562"
                obs_ratio="99.95" />
          <mask elevation="15 degrees"
                obs_expected="28137"
                obs_have="28137"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:10:10"
                         size="4328576"
                         time_creation="Tue Jul 17 01:02:49 2012"
                         time_modification="Tue Jun 19 07:10:09 2012" />
        <observations epoch_first="Tue Jun 19 06:00:00 2012"
                      epoch_last="Tue Jun 19 06:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35384"
                obs_have="32612"
                obs_ratio="92.17" />
          <mask elevation="10 degrees"
                obs_expected="32579"
                obs_have="32562"
                obs_ratio="99.95" />
          <mask elevation="15 degrees"
                obs_expected="28137"
                obs_have="28137"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171h.12o"
          error="0"
          interval="1"
          session="h">
      <control date="Tue Jun 19 08:42:00 2012"
               level="3">
        <file_statistics latency="00:09:08"
                         size="3764846"
                         time_creation="Tue Jun 19 08:13:32 2012"
                         time_modification="Tue Jun 19 08:09:07 2012" />
        <observations epoch_first="Tue Jun 19 07:00:00 2012"
                      epoch_last="Tue Jun 19 07:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="30438"
                obs_have="28242"
                obs_ratio="92.79" />
          <mask elevation="10 degrees"
                obs_expected="28237"
                obs_have="28218"
                obs_ratio="99.93" />
          <mask elevation="15 degrees"
                obs_expected="25991"
                obs_have="25991"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 09:01:00 2012"
               level="3">
        <file_statistics latency="00:09:08"
                         size="3764846"
                         time_creation="Tue Jun 19 08:13:32 2012"
                         time_modification="Tue Jun 19 08:09:07 2012" />
        <observations epoch_first="Tue Jun 19 07:00:00 2012"
                      epoch_last="Tue Jun 19 07:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="30438"
                obs_have="28242"
                obs_ratio="92.79" />
          <mask elevation="10 degrees"
                obs_expected="28237"
                obs_have="28218"
                obs_ratio="99.93" />
          <mask elevation="15 degrees"
                obs_expected="25991"
                obs_have="25991"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 10:07:40 2012"
               level="3">
        <file_statistics latency="00:09:08"
                         size="3764846"
                         time_creation="Tue Jun 19 08:13:32 2012"
                         time_modification="Tue Jun 19 08:09:07 2012" />
        <observations epoch_first="Tue Jun 19 07:00:00 2012"
                      epoch_last="Tue Jun 19 07:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="30438"
                obs_have="28242"
                obs_ratio="92.79" />
          <mask elevation="10 degrees"
                obs_expected="28237"
                obs_have="28218"
                obs_ratio="99.93" />
          <mask elevation="15 degrees"
                obs_expected="25991"
                obs_have="25991"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 10:49:02 2012"
               level="3">
        <file_statistics latency="00:09:08"
                         size="3764846"
                         time_creation="Tue Jun 19 08:13:32 2012"
                         time_modification="Tue Jun 19 08:09:07 2012" />
        <observations epoch_first="Tue Jun 19 07:00:00 2012"
                      epoch_last="Tue Jun 19 07:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="30438"
                obs_have="28242"
                obs_ratio="92.79" />
          <mask elevation="10 degrees"
                obs_expected="28237"
                obs_have="28218"
                obs_ratio="99.93" />
          <mask elevation="15 degrees"
                obs_expected="25991"
                obs_have="25991"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:09:08"
                         size="3764846"
                         time_creation="Tue Jun 19 08:13:32 2012"
                         time_modification="Tue Jun 19 08:09:07 2012" />
        <observations epoch_first="Tue Jun 19 07:00:00 2012"
                      epoch_last="Tue Jun 19 07:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="30438"
                obs_have="28242"
                obs_ratio="92.79" />
          <mask elevation="10 degrees"
                obs_expected="28237"
                obs_have="28218"
                obs_ratio="99.93" />
          <mask elevation="15 degrees"
                obs_expected="25991"
                obs_have="25991"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:09:08"
                         size="3764846"
                         time_creation="Tue Jul 17 01:02:50 2012"
                         time_modification="Tue Jun 19 08:09:07 2012" />
        <observations epoch_first="Tue Jun 19 07:00:00 2012"
                      epoch_last="Tue Jun 19 07:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="30438"
                obs_have="28242"
                obs_ratio="92.79" />
          <mask elevation="10 degrees"
                obs_expected="28237"
                obs_have="28218"
                obs_ratio="99.93" />
          <mask elevation="15 degrees"
                obs_expected="25991"
                obs_have="25991"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171i.12o"
          error="0"
          interval="1"
          session="i">
      <control date="Tue Jun 19 09:36:24 2012"
               level="3">
        <file_statistics latency="00:08:52"
                         size="3785861"
                         time_creation="Tue Jun 19 09:13:45 2012"
                         time_modification="Tue Jun 19 09:08:51 2012" />
        <observations epoch_first="Tue Jun 19 08:00:00 2012"
                      epoch_last="Tue Jun 19 08:59:59 2012"
                      epochs="3537"
                      epochs_ratio="98.25">
          <mask elevation="03 degrees"
                obs_expected="34585"
                obs_have="28400"
                obs_ratio="82.12" />
          <mask elevation="10 degrees"
                obs_expected="28945"
                obs_have="28354"
                obs_ratio="97.96" />
          <mask elevation="15 degrees"
                obs_expected="24013"
                obs_have="23572"
                obs_ratio="98.16" />
        </observations>
      </control>
      <control date="Tue Jun 19 09:54:47 2012"
               level="3">
        <file_statistics latency="00:08:52"
                         size="3785861"
                         time_creation="Tue Jun 19 09:13:45 2012"
                         time_modification="Tue Jun 19 09:08:51 2012" />
        <observations epoch_first="Tue Jun 19 08:00:00 2012"
                      epoch_last="Tue Jun 19 08:59:59 2012"
                      epochs="3537"
                      epochs_ratio="98.25">
          <mask elevation="03 degrees"
                obs_expected="34585"
                obs_have="28400"
                obs_ratio="82.12" />
          <mask elevation="10 degrees"
                obs_expected="28945"
                obs_have="28354"
                obs_ratio="97.96" />
          <mask elevation="15 degrees"
                obs_expected="24013"
                obs_have="23572"
                obs_ratio="98.16" />
        </observations>
      </control>
      <control date="Tue Jun 19 11:39:13 2012"
               level="3">
        <file_statistics latency="00:08:52"
                         size="3785861"
                         time_creation="Tue Jun 19 09:13:45 2012"
                         time_modification="Tue Jun 19 09:08:51 2012" />
        <observations epoch_first="Tue Jun 19 08:00:00 2012"
                      epoch_last="Tue Jun 19 08:59:59 2012"
                      epochs="3537"
                      epochs_ratio="98.25">
          <mask elevation="03 degrees"
                obs_expected="34585"
                obs_have="28400"
                obs_ratio="82.12" />
          <mask elevation="10 degrees"
                obs_expected="28945"
                obs_have="28354"
                obs_ratio="97.96" />
          <mask elevation="15 degrees"
                obs_expected="24013"
                obs_have="23572"
                obs_ratio="98.16" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:08:52"
                         size="3785861"
                         time_creation="Tue Jun 19 09:13:45 2012"
                         time_modification="Tue Jun 19 09:08:51 2012" />
        <observations epoch_first="Tue Jun 19 08:00:00 2012"
                      epoch_last="Tue Jun 19 08:59:59 2012"
                      epochs="3537"
                      epochs_ratio="98.25">
          <mask elevation="03 degrees"
                obs_expected="34585"
                obs_have="28400"
                obs_ratio="82.12" />
          <mask elevation="10 degrees"
                obs_expected="28945"
                obs_have="28354"
                obs_ratio="97.96" />
          <mask elevation="15 degrees"
                obs_expected="24013"
                obs_have="23572"
                obs_ratio="98.16" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:08:52"
                         size="3785861"
                         time_creation="Tue Jul 17 01:02:51 2012"
                         time_modification="Tue Jun 19 09:08:51 2012" />
        <observations epoch_first="Tue Jun 19 08:00:00 2012"
                      epoch_last="Tue Jun 19 08:59:59 2012"
                      epochs="3537"
                      epochs_ratio="98.25">
          <mask elevation="03 degrees"
                obs_expected="34585"
                obs_have="28400"
                obs_ratio="82.12" />
          <mask elevation="10 degrees"
                obs_expected="28945"
                obs_have="28354"
                obs_ratio="97.96" />
          <mask elevation="15 degrees"
                obs_expected="24013"
                obs_have="23572"
                obs_ratio="98.16" />
        </observations>
      </control>
    </file>
    <file name="/cheb171j.12o"
          error="0"
          interval="1"
          session="j">
      <control date="Tue Jun 19 10:21:39 2012"
               level="3">
        <file_statistics latency="00:09:54"
                         size="847356"
                         time_creation="Tue Jun 19 10:13:22 2012"
                         time_modification="Tue Jun 19 10:09:53 2012" />
        <observations epoch_first="Tue Jun 19 09:00:00 2012"
                      epoch_last="Tue Jun 19 09:59:59 2012"
                      epochs="772"
                      epochs_ratio="21.44">
          <mask elevation="03 degrees"
                obs_expected="34501"
                obs_have="6358"
                obs_ratio="18.43" />
          <mask elevation="10 degrees"
                obs_expected="28655"
                obs_have="6355"
                obs_ratio="22.18" />
          <mask elevation="15 degrees"
                obs_expected="23623"
                obs_have="4891"
                obs_ratio="20.70" />
        </observations>
      </control>
      <control date="Tue Jun 19 10:34:00 2012"
               level="3">
        <file_statistics latency="00:09:54"
                         size="847356"
                         time_creation="Tue Jun 19 10:13:22 2012"
                         time_modification="Tue Jun 19 10:09:53 2012" />
        <observations epoch_first="Tue Jun 19 09:00:00 2012"
                      epoch_last="Tue Jun 19 09:59:59 2012"
                      epochs="772"
                      epochs_ratio="21.44">
          <mask elevation="03 degrees"
                obs_expected="34500"
                obs_have="6358"
                obs_ratio="18.43" />
          <mask elevation="10 degrees"
                obs_expected="28655"
                obs_have="6355"
                obs_ratio="22.18" />
          <mask elevation="15 degrees"
                obs_expected="23623"
                obs_have="4891"
                obs_ratio="20.70" />
        </observations>
      </control>
      <control date="Tue Jun 19 11:00:24 2012"
               level="3">
        <file_statistics latency="00:09:54"
                         size="847356"
                         time_creation="Tue Jun 19 10:13:22 2012"
                         time_modification="Tue Jun 19 10:09:53 2012" />
        <observations epoch_first="Tue Jun 19 09:00:00 2012"
                      epoch_last="Tue Jun 19 09:59:59 2012"
                      epochs="772"
                      epochs_ratio="21.44">
          <mask elevation="03 degrees"
                obs_expected="34500"
                obs_have="6358"
                obs_ratio="18.43" />
          <mask elevation="10 degrees"
                obs_expected="28655"
                obs_have="6355"
                obs_ratio="22.18" />
          <mask elevation="15 degrees"
                obs_expected="23623"
                obs_have="4891"
                obs_ratio="20.70" />
        </observations>
      </control>
      <control date="Tue Jun 19 12:35:32 2012"
               level="3">
        <file_statistics latency="00:09:54"
                         size="847356"
                         time_creation="Tue Jun 19 10:13:22 2012"
                         time_modification="Tue Jun 19 10:09:53 2012" />
        <observations epoch_first="Tue Jun 19 09:00:00 2012"
                      epoch_last="Tue Jun 19 09:59:59 2012"
                      epochs="772"
                      epochs_ratio="21.44">
          <mask elevation="03 degrees"
                obs_expected="34500"
                obs_have="6358"
                obs_ratio="18.43" />
          <mask elevation="10 degrees"
                obs_expected="28655"
                obs_have="6355"
                obs_ratio="22.18" />
          <mask elevation="15 degrees"
                obs_expected="23623"
                obs_have="4891"
                obs_ratio="20.70" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:09:54"
                         size="847356"
                         time_creation="Tue Jun 19 10:13:22 2012"
                         time_modification="Tue Jun 19 10:09:53 2012" />
        <observations epoch_first="Tue Jun 19 09:00:00 2012"
                      epoch_last="Tue Jun 19 09:59:59 2012"
                      epochs="772"
                      epochs_ratio="21.44">
          <mask elevation="03 degrees"
                obs_expected="34500"
                obs_have="6358"
                obs_ratio="18.43" />
          <mask elevation="10 degrees"
                obs_expected="28655"
                obs_have="6355"
                obs_ratio="22.18" />
          <mask elevation="15 degrees"
                obs_expected="23623"
                obs_have="4891"
                obs_ratio="20.70" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:09:54"
                         size="847356"
                         time_creation="Tue Jul 17 01:02:52 2012"
                         time_modification="Tue Jun 19 10:09:53 2012" />
        <observations epoch_first="Tue Jun 19 09:00:00 2012"
                      epoch_last="Tue Jun 19 09:59:59 2012"
                      epochs="772"
                      epochs_ratio="21.44">
          <mask elevation="03 degrees"
                obs_expected="34500"
                obs_have="6358"
                obs_ratio="18.43" />
          <mask elevation="10 degrees"
                obs_expected="28655"
                obs_have="6355"
                obs_ratio="22.18" />
          <mask elevation="15 degrees"
                obs_expected="23623"
                obs_have="4891"
                obs_ratio="20.70" />
        </observations>
      </control>
    </file>
    <file name="/cheb171k.12o"
          error="0"
          interval="1"
          session="k">
      <control date="Tue Jun 19 11:27:04 2012"
               level="3">
        <file_statistics latency="00:09:23"
                         size="4064756"
                         time_creation="Tue Jun 19 11:13:25 2012"
                         time_modification="Tue Jun 19 11:09:22 2012" />
        <observations epoch_first="Tue Jun 19 10:00:00 2012"
                      epoch_last="Tue Jun 19 10:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="33575"
                obs_have="30559"
                obs_ratio="91.02" />
          <mask elevation="10 degrees"
                obs_expected="30575"
                obs_have="30536"
                obs_ratio="99.87" />
          <mask elevation="15 degrees"
                obs_expected="27799"
                obs_have="27799"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 11:49:48 2012"
               level="3">
        <file_statistics latency="00:09:23"
                         size="4064756"
                         time_creation="Tue Jun 19 11:13:25 2012"
                         time_modification="Tue Jun 19 11:09:22 2012" />
        <observations epoch_first="Tue Jun 19 10:00:00 2012"
                      epoch_last="Tue Jun 19 10:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="33575"
                obs_have="30559"
                obs_ratio="91.02" />
          <mask elevation="10 degrees"
                obs_expected="30575"
                obs_have="30536"
                obs_ratio="99.87" />
          <mask elevation="15 degrees"
                obs_expected="27799"
                obs_have="27799"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 13:37:27 2012"
               level="3">
        <file_statistics latency="00:09:23"
                         size="4064756"
                         time_creation="Tue Jun 19 11:13:25 2012"
                         time_modification="Tue Jun 19 11:09:22 2012" />
        <observations epoch_first="Tue Jun 19 10:00:00 2012"
                      epoch_last="Tue Jun 19 10:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="33575"
                obs_have="30559"
                obs_ratio="91.02" />
          <mask elevation="10 degrees"
                obs_expected="30575"
                obs_have="30536"
                obs_ratio="99.87" />
          <mask elevation="15 degrees"
                obs_expected="27799"
                obs_have="27799"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:09:23"
                         size="4064756"
                         time_creation="Tue Jun 19 11:13:25 2012"
                         time_modification="Tue Jun 19 11:09:22 2012" />
        <observations epoch_first="Tue Jun 19 10:00:00 2012"
                      epoch_last="Tue Jun 19 10:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="33575"
                obs_have="30559"
                obs_ratio="91.02" />
          <mask elevation="10 degrees"
                obs_expected="30575"
                obs_have="30536"
                obs_ratio="99.87" />
          <mask elevation="15 degrees"
                obs_expected="27799"
                obs_have="27799"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:09:23"
                         size="4064756"
                         time_creation="Tue Jul 17 01:02:52 2012"
                         time_modification="Tue Jun 19 11:09:22 2012" />
        <observations epoch_first="Tue Jun 19 10:00:00 2012"
                      epoch_last="Tue Jun 19 10:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="33575"
                obs_have="30559"
                obs_ratio="91.02" />
          <mask elevation="10 degrees"
                obs_expected="30575"
                obs_have="30536"
                obs_ratio="99.87" />
          <mask elevation="15 degrees"
                obs_expected="27799"
                obs_have="27799"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171l.12o"
          error="0"
          interval="1"
          session="l">
      <control date="Tue Jun 19 12:21:21 2012"
               level="3">
        <file_statistics latency="00:11:09"
                         size="4206929"
                         time_creation="Tue Jun 19 12:13:49 2012"
                         time_modification="Tue Jun 19 12:11:08 2012" />
        <observations epoch_first="Tue Jun 19 11:00:00 2012"
                      epoch_last="Tue Jun 19 11:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="31669"
                obs_ratio="97.74" />
          <mask elevation="10 degrees"
                obs_expected="31699"
                obs_have="31669"
                obs_ratio="99.91" />
          <mask elevation="15 degrees"
                obs_expected="29984"
                obs_have="29984"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 12:47:17 2012"
               level="3">
        <file_statistics latency="00:11:09"
                         size="4206929"
                         time_creation="Tue Jun 19 12:13:49 2012"
                         time_modification="Tue Jun 19 12:11:08 2012" />
        <observations epoch_first="Tue Jun 19 11:00:00 2012"
                      epoch_last="Tue Jun 19 11:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="31669"
                obs_ratio="97.74" />
          <mask elevation="10 degrees"
                obs_expected="31699"
                obs_have="31669"
                obs_ratio="99.91" />
          <mask elevation="15 degrees"
                obs_expected="29984"
                obs_have="29984"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 14:37:58 2012"
               level="3">
        <file_statistics latency="00:11:09"
                         size="4206929"
                         time_creation="Tue Jun 19 12:13:49 2012"
                         time_modification="Tue Jun 19 12:11:08 2012" />
        <observations epoch_first="Tue Jun 19 11:00:00 2012"
                      epoch_last="Tue Jun 19 11:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="31669"
                obs_ratio="97.74" />
          <mask elevation="10 degrees"
                obs_expected="31699"
                obs_have="31669"
                obs_ratio="99.91" />
          <mask elevation="15 degrees"
                obs_expected="29984"
                obs_have="29984"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:11:09"
                         size="4206929"
                         time_creation="Tue Jun 19 12:13:49 2012"
                         time_modification="Tue Jun 19 12:11:08 2012" />
        <observations epoch_first="Tue Jun 19 11:00:00 2012"
                      epoch_last="Tue Jun 19 11:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="31669"
                obs_ratio="97.74" />
          <mask elevation="10 degrees"
                obs_expected="31699"
                obs_have="31669"
                obs_ratio="99.91" />
          <mask elevation="15 degrees"
                obs_expected="29984"
                obs_have="29984"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:11:09"
                         size="4206929"
                         time_creation="Tue Jul 17 01:02:53 2012"
                         time_modification="Tue Jun 19 12:11:08 2012" />
        <observations epoch_first="Tue Jun 19 11:00:00 2012"
                      epoch_last="Tue Jun 19 11:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="31669"
                obs_ratio="97.74" />
          <mask elevation="10 degrees"
                obs_expected="31699"
                obs_have="31669"
                obs_ratio="99.91" />
          <mask elevation="15 degrees"
                obs_expected="29984"
                obs_have="29984"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171m.12o"
          error="0"
          interval="1"
          session="m">
      <control date="Tue Jun 19 13:49:04 2012"
               level="3">
        <file_statistics latency="00:11:12"
                         size="4322256"
                         time_creation="Tue Jun 19 13:24:36 2012"
                         time_modification="Tue Jun 19 13:11:11 2012" />
        <observations epoch_first="Tue Jun 19 12:00:00 2012"
                      epoch_last="Tue Jun 19 12:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36972"
                obs_have="32556"
                obs_ratio="88.06" />
          <mask elevation="10 degrees"
                obs_expected="32586"
                obs_have="32532"
                obs_ratio="99.83" />
          <mask elevation="15 degrees"
                obs_expected="28785"
                obs_have="28785"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 15:37:21 2012"
               level="3">
        <file_statistics latency="00:11:12"
                         size="4322256"
                         time_creation="Tue Jun 19 13:24:36 2012"
                         time_modification="Tue Jun 19 13:11:11 2012" />
        <observations epoch_first="Tue Jun 19 12:00:00 2012"
                      epoch_last="Tue Jun 19 12:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36972"
                obs_have="32556"
                obs_ratio="88.06" />
          <mask elevation="10 degrees"
                obs_expected="32586"
                obs_have="32532"
                obs_ratio="99.83" />
          <mask elevation="15 degrees"
                obs_expected="28785"
                obs_have="28785"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:11:12"
                         size="4322256"
                         time_creation="Tue Jun 19 13:24:36 2012"
                         time_modification="Tue Jun 19 13:11:11 2012" />
        <observations epoch_first="Tue Jun 19 12:00:00 2012"
                      epoch_last="Tue Jun 19 12:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36972"
                obs_have="32556"
                obs_ratio="88.06" />
          <mask elevation="10 degrees"
                obs_expected="32586"
                obs_have="32532"
                obs_ratio="99.83" />
          <mask elevation="15 degrees"
                obs_expected="28785"
                obs_have="28785"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:11:12"
                         size="4322256"
                         time_creation="Tue Jul 17 01:02:54 2012"
                         time_modification="Tue Jun 19 13:11:11 2012" />
        <observations epoch_first="Tue Jun 19 12:00:00 2012"
                      epoch_last="Tue Jun 19 12:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="36972"
                obs_have="32556"
                obs_ratio="88.06" />
          <mask elevation="10 degrees"
                obs_expected="32586"
                obs_have="32532"
                obs_ratio="99.83" />
          <mask elevation="15 degrees"
                obs_expected="28785"
                obs_have="28785"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171n.12o"
          error="0"
          interval="1"
          session="n">
      <control date="Tue Jun 19 14:20:38 2012"
               level="3">
        <file_statistics latency="00:11:31"
                         size="3904894"
                         time_creation="Tue Jun 19 14:14:02 2012"
                         time_modification="Tue Jun 19 14:11:30 2012" />
        <observations epoch_first="Tue Jun 19 13:00:00 2012"
                      epoch_last="Tue Jun 19 13:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="37896"
                obs_have="29311"
                obs_ratio="77.35" />
          <mask elevation="10 degrees"
                obs_expected="29294"
                obs_have="29233"
                obs_ratio="99.79" />
          <mask elevation="15 degrees"
                obs_expected="23106"
                obs_have="23106"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 14:48:08 2012"
               level="3">
        <file_statistics latency="00:11:31"
                         size="3904894"
                         time_creation="Tue Jun 19 14:14:02 2012"
                         time_modification="Tue Jun 19 14:11:30 2012" />
        <observations epoch_first="Tue Jun 19 13:00:00 2012"
                      epoch_last="Tue Jun 19 13:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="37896"
                obs_have="29311"
                obs_ratio="77.35" />
          <mask elevation="10 degrees"
                obs_expected="29294"
                obs_have="29233"
                obs_ratio="99.79" />
          <mask elevation="15 degrees"
                obs_expected="23106"
                obs_have="23106"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 16:39:46 2012"
               level="3">
        <file_statistics latency="00:11:31"
                         size="3904894"
                         time_creation="Tue Jun 19 14:14:02 2012"
                         time_modification="Tue Jun 19 14:11:30 2012" />
        <observations epoch_first="Tue Jun 19 13:00:00 2012"
                      epoch_last="Tue Jun 19 13:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="37896"
                obs_have="29311"
                obs_ratio="77.35" />
          <mask elevation="10 degrees"
                obs_expected="29294"
                obs_have="29233"
                obs_ratio="99.79" />
          <mask elevation="15 degrees"
                obs_expected="23106"
                obs_have="23106"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:11:31"
                         size="3904894"
                         time_creation="Tue Jun 19 14:14:02 2012"
                         time_modification="Tue Jun 19 14:11:30 2012" />
        <observations epoch_first="Tue Jun 19 13:00:00 2012"
                      epoch_last="Tue Jun 19 13:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="37896"
                obs_have="29311"
                obs_ratio="77.35" />
          <mask elevation="10 degrees"
                obs_expected="29294"
                obs_have="29233"
                obs_ratio="99.79" />
          <mask elevation="15 degrees"
                obs_expected="23106"
                obs_have="23106"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:11:31"
                         size="3904894"
                         time_creation="Tue Jul 17 01:02:55 2012"
                         time_modification="Tue Jun 19 14:11:30 2012" />
        <observations epoch_first="Tue Jun 19 13:00:00 2012"
                      epoch_last="Tue Jun 19 13:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="37896"
                obs_have="29311"
                obs_ratio="77.35" />
          <mask elevation="10 degrees"
                obs_expected="29294"
                obs_have="29233"
                obs_ratio="99.79" />
          <mask elevation="15 degrees"
                obs_expected="23106"
                obs_have="23106"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171o.12o"
          error="0"
          interval="1"
          session="o">
      <control date="Tue Jun 19 15:21:22 2012"
               level="3">
        <file_statistics latency="00:11:47"
                         size="4045790"
                         time_creation="Tue Jun 19 15:14:01 2012"
                         time_modification="Tue Jun 19 15:11:46 2012" />
        <observations epoch_first="Tue Jun 19 14:00:00 2012"
                      epoch_last="Tue Jun 19 14:59:59 2012"
                      epochs="3533"
                      epochs_ratio="98.14">
          <mask elevation="03 degrees"
                obs_expected="32140"
                obs_have="30437"
                obs_ratio="94.70" />
          <mask elevation="10 degrees"
                obs_expected="31011"
                obs_have="30437"
                obs_ratio="98.15" />
          <mask elevation="15 degrees"
                obs_expected="29806"
                obs_have="29270"
                obs_ratio="98.20" />
        </observations>
      </control>
      <control date="Tue Jun 19 15:49:45 2012"
               level="3">
        <file_statistics latency="00:11:47"
                         size="4045790"
                         time_creation="Tue Jun 19 15:14:01 2012"
                         time_modification="Tue Jun 19 15:11:46 2012" />
        <observations epoch_first="Tue Jun 19 14:00:00 2012"
                      epoch_last="Tue Jun 19 14:59:59 2012"
                      epochs="3533"
                      epochs_ratio="98.14">
          <mask elevation="03 degrees"
                obs_expected="32140"
                obs_have="30437"
                obs_ratio="94.70" />
          <mask elevation="10 degrees"
                obs_expected="31011"
                obs_have="30437"
                obs_ratio="98.15" />
          <mask elevation="15 degrees"
                obs_expected="29805"
                obs_have="29269"
                obs_ratio="98.20" />
        </observations>
      </control>
      <control date="Tue Jun 19 17:42:03 2012"
               level="3">
        <file_statistics latency="00:11:47"
                         size="4045790"
                         time_creation="Tue Jun 19 15:14:01 2012"
                         time_modification="Tue Jun 19 15:11:46 2012" />
        <observations epoch_first="Tue Jun 19 14:00:00 2012"
                      epoch_last="Tue Jun 19 14:59:59 2012"
                      epochs="3533"
                      epochs_ratio="98.14">
          <mask elevation="03 degrees"
                obs_expected="32140"
                obs_have="30437"
                obs_ratio="94.70" />
          <mask elevation="10 degrees"
                obs_expected="31011"
                obs_have="30437"
                obs_ratio="98.15" />
          <mask elevation="15 degrees"
                obs_expected="29805"
                obs_have="29269"
                obs_ratio="98.20" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:11:47"
                         size="4045790"
                         time_creation="Tue Jun 19 15:14:01 2012"
                         time_modification="Tue Jun 19 15:11:46 2012" />
        <observations epoch_first="Tue Jun 19 14:00:00 2012"
                      epoch_last="Tue Jun 19 14:59:59 2012"
                      epochs="3533"
                      epochs_ratio="98.14">
          <mask elevation="03 degrees"
                obs_expected="32140"
                obs_have="30437"
                obs_ratio="94.70" />
          <mask elevation="10 degrees"
                obs_expected="31011"
                obs_have="30437"
                obs_ratio="98.15" />
          <mask elevation="15 degrees"
                obs_expected="29805"
                obs_have="29269"
                obs_ratio="98.20" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:11:47"
                         size="4045790"
                         time_creation="Tue Jul 17 01:02:56 2012"
                         time_modification="Tue Jun 19 15:11:46 2012" />
        <observations epoch_first="Tue Jun 19 14:00:00 2012"
                      epoch_last="Tue Jun 19 14:59:59 2012"
                      epochs="3533"
                      epochs_ratio="98.14">
          <mask elevation="03 degrees"
                obs_expected="32140"
                obs_have="30437"
                obs_ratio="94.70" />
          <mask elevation="10 degrees"
                obs_expected="31011"
                obs_have="30437"
                obs_ratio="98.15" />
          <mask elevation="15 degrees"
                obs_expected="29805"
                obs_have="29269"
                obs_ratio="98.20" />
        </observations>
      </control>
    </file>
    <file name="/cheb171p.12o"
          error="0"
          interval="1"
          session="p">
      <control date="Tue Jun 19 16:50:05 2012"
               level="3">
        <file_statistics latency="00:11:54"
                         size="3515391"
                         time_creation="Tue Jun 19 16:24:15 2012"
                         time_modification="Tue Jun 19 16:11:53 2012" />
        <observations epoch_first="Tue Jun 19 15:00:00 2012"
                      epoch_last="Tue Jun 19 15:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="29740"
                obs_have="26317"
                obs_ratio="88.49" />
          <mask elevation="10 degrees"
                obs_expected="26277"
                obs_have="26277"
                obs_ratio="100.00" />
          <mask elevation="15 degrees"
                obs_expected="23619"
                obs_have="23619"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 18:41:23 2012"
               level="3">
        <file_statistics latency="00:11:54"
                         size="3515391"
                         time_creation="Tue Jun 19 16:24:15 2012"
                         time_modification="Tue Jun 19 16:11:53 2012" />
        <observations epoch_first="Tue Jun 19 15:00:00 2012"
                      epoch_last="Tue Jun 19 15:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="29740"
                obs_have="26317"
                obs_ratio="88.49" />
          <mask elevation="10 degrees"
                obs_expected="26277"
                obs_have="26277"
                obs_ratio="100.00" />
          <mask elevation="15 degrees"
                obs_expected="23619"
                obs_have="23619"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:11:54"
                         size="3515391"
                         time_creation="Tue Jun 19 16:24:15 2012"
                         time_modification="Tue Jun 19 16:11:53 2012" />
        <observations epoch_first="Tue Jun 19 15:00:00 2012"
                      epoch_last="Tue Jun 19 15:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="29740"
                obs_have="26317"
                obs_ratio="88.49" />
          <mask elevation="10 degrees"
                obs_expected="26277"
                obs_have="26277"
                obs_ratio="100.00" />
          <mask elevation="15 degrees"
                obs_expected="23619"
                obs_have="23619"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:11:54"
                         size="3515391"
                         time_creation="Tue Jul 17 01:02:57 2012"
                         time_modification="Tue Jun 19 16:11:53 2012" />
        <observations epoch_first="Tue Jun 19 15:00:00 2012"
                      epoch_last="Tue Jun 19 15:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="29740"
                obs_have="26317"
                obs_ratio="88.49" />
          <mask elevation="10 degrees"
                obs_expected="26277"
                obs_have="26277"
                obs_ratio="100.00" />
          <mask elevation="15 degrees"
                obs_expected="23619"
                obs_have="23619"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171q.12o"
          error="0"
          interval="1"
          session="q">
      <control date="Tue Jun 19 17:56:34 2012"
               level="3">
        <file_statistics latency="00:12:05"
                         size="3485217"
                         time_creation="Tue Jun 19 17:23:25 2012"
                         time_modification="Tue Jun 19 17:12:04 2012" />
        <observations epoch_first="Tue Jun 19 16:00:00 2012"
                      epoch_last="Tue Jun 19 16:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="28571"
                obs_have="25999"
                obs_ratio="91.00" />
          <mask elevation="10 degrees"
                obs_expected="26093"
                obs_have="25980"
                obs_ratio="99.57" />
          <mask elevation="15 degrees"
                obs_expected="22914"
                obs_have="22914"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 19:44:39 2012"
               level="3">
        <file_statistics latency="00:12:05"
                         size="3485217"
                         time_creation="Tue Jun 19 17:23:25 2012"
                         time_modification="Tue Jun 19 17:12:04 2012" />
        <observations epoch_first="Tue Jun 19 16:00:00 2012"
                      epoch_last="Tue Jun 19 16:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="28571"
                obs_have="25999"
                obs_ratio="91.00" />
          <mask elevation="10 degrees"
                obs_expected="26093"
                obs_have="25980"
                obs_ratio="99.57" />
          <mask elevation="15 degrees"
                obs_expected="22914"
                obs_have="22914"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:12:05"
                         size="3485217"
                         time_creation="Tue Jun 19 17:23:25 2012"
                         time_modification="Tue Jun 19 17:12:04 2012" />
        <observations epoch_first="Tue Jun 19 16:00:00 2012"
                      epoch_last="Tue Jun 19 16:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="28571"
                obs_have="25999"
                obs_ratio="91.00" />
          <mask elevation="10 degrees"
                obs_expected="26093"
                obs_have="25980"
                obs_ratio="99.57" />
          <mask elevation="15 degrees"
                obs_expected="22914"
                obs_have="22914"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:12:05"
                         size="3485217"
                         time_creation="Tue Jul 17 01:02:58 2012"
                         time_modification="Tue Jun 19 17:12:04 2012" />
        <observations epoch_first="Tue Jun 19 16:00:00 2012"
                      epoch_last="Tue Jun 19 16:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="28571"
                obs_have="25999"
                obs_ratio="91.00" />
          <mask elevation="10 degrees"
                obs_expected="26093"
                obs_have="25980"
                obs_ratio="99.57" />
          <mask elevation="15 degrees"
                obs_expected="22914"
                obs_have="22914"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171r.12o"
          error="0"
          interval="1"
          session="r">
      <control date="Tue Jun 19 18:24:57 2012"
               level="3">
        <file_statistics latency="00:12:07"
                         size="3428336"
                         time_creation="Tue Jun 19 18:18:34 2012"
                         time_modification="Tue Jun 19 18:12:06 2012" />
        <observations epoch_first="Tue Jun 19 17:00:00 2012"
                      epoch_last="Tue Jun 19 17:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="30888"
                obs_have="25615"
                obs_ratio="82.93" />
          <mask elevation="10 degrees"
                obs_expected="25699"
                obs_have="25599"
                obs_ratio="99.61" />
          <mask elevation="15 degrees"
                obs_expected="20564"
                obs_have="20564"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 18:55:08 2012"
               level="3">
        <file_statistics latency="00:12:07"
                         size="3428336"
                         time_creation="Tue Jun 19 18:18:34 2012"
                         time_modification="Tue Jun 19 18:12:06 2012" />
        <observations epoch_first="Tue Jun 19 17:00:00 2012"
                      epoch_last="Tue Jun 19 17:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="30888"
                obs_have="25615"
                obs_ratio="82.93" />
          <mask elevation="10 degrees"
                obs_expected="25699"
                obs_have="25599"
                obs_ratio="99.61" />
          <mask elevation="15 degrees"
                obs_expected="20564"
                obs_have="20564"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Tue Jun 19 20:44:55 2012"
               level="3">
        <file_statistics latency="00:12:07"
                         size="3428336"
                         time_creation="Tue Jun 19 18:18:34 2012"
                         time_modification="Tue Jun 19 18:12:06 2012" />
        <observations epoch_first="Tue Jun 19 17:00:00 2012"
                      epoch_last="Tue Jun 19 17:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="30888"
                obs_have="25615"
                obs_ratio="82.93" />
          <mask elevation="10 degrees"
                obs_expected="25699"
                obs_have="25599"
                obs_ratio="99.61" />
          <mask elevation="15 degrees"
                obs_expected="20564"
                obs_have="20564"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:12:07"
                         size="3428336"
                         time_creation="Tue Jun 19 18:18:34 2012"
                         time_modification="Tue Jun 19 18:12:06 2012" />
        <observations epoch_first="Tue Jun 19 17:00:00 2012"
                      epoch_last="Tue Jun 19 17:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="30888"
                obs_have="25615"
                obs_ratio="82.93" />
          <mask elevation="10 degrees"
                obs_expected="25699"
                obs_have="25599"
                obs_ratio="99.61" />
          <mask elevation="15 degrees"
                obs_expected="20564"
                obs_have="20564"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:12:07"
                         size="3428336"
                         time_creation="Tue Jul 17 01:02:59 2012"
                         time_modification="Tue Jun 19 18:12:06 2012" />
        <observations epoch_first="Tue Jun 19 17:00:00 2012"
                      epoch_last="Tue Jun 19 17:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="30888"
                obs_have="25615"
                obs_ratio="82.93" />
          <mask elevation="10 degrees"
                obs_expected="25699"
                obs_have="25599"
                obs_ratio="99.61" />
          <mask elevation="15 degrees"
                obs_expected="20564"
                obs_have="20564"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171s.12o"
          error="0"
          interval="1"
          session="s">
      <control date="Tue Jun 19 20:00:55 2012"
               level="3">
        <file_statistics latency="00:13:23"
                         size="3869770"
                         time_creation="Tue Jun 19 19:18:38 2012"
                         time_modification="Tue Jun 19 19:13:22 2012" />
        <observations epoch_first="Tue Jun 19 18:00:00 2012"
                      epoch_last="Tue Jun 19 18:59:59 2012"
                      epochs="3414"
                      epochs_ratio="94.83">
          <mask elevation="03 degrees"
                obs_expected="34931"
                obs_have="29039"
                obs_ratio="83.13" />
          <mask elevation="10 degrees"
                obs_expected="30649"
                obs_have="29021"
                obs_ratio="94.69" />
          <mask elevation="15 degrees"
                obs_expected="25585"
                obs_have="24097"
                obs_ratio="94.18" />
        </observations>
      </control>
      <control date="Tue Jun 19 21:52:28 2012"
               level="3">
        <file_statistics latency="00:13:23"
                         size="3869770"
                         time_creation="Tue Jun 19 19:18:38 2012"
                         time_modification="Tue Jun 19 19:13:22 2012" />
        <observations epoch_first="Tue Jun 19 18:00:00 2012"
                      epoch_last="Tue Jun 19 18:59:59 2012"
                      epochs="3414"
                      epochs_ratio="94.83">
          <mask elevation="03 degrees"
                obs_expected="34931"
                obs_have="29039"
                obs_ratio="83.13" />
          <mask elevation="10 degrees"
                obs_expected="30649"
                obs_have="29021"
                obs_ratio="94.69" />
          <mask elevation="15 degrees"
                obs_expected="25585"
                obs_have="24097"
                obs_ratio="94.18" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:13:23"
                         size="3869770"
                         time_creation="Tue Jun 19 19:18:38 2012"
                         time_modification="Tue Jun 19 19:13:22 2012" />
        <observations epoch_first="Tue Jun 19 18:00:00 2012"
                      epoch_last="Tue Jun 19 18:59:59 2012"
                      epochs="3414"
                      epochs_ratio="94.83">
          <mask elevation="03 degrees"
                obs_expected="34931"
                obs_have="29039"
                obs_ratio="83.13" />
          <mask elevation="10 degrees"
                obs_expected="30649"
                obs_have="29021"
                obs_ratio="94.69" />
          <mask elevation="15 degrees"
                obs_expected="25585"
                obs_have="24097"
                obs_ratio="94.18" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:13:23"
                         size="3869770"
                         time_creation="Tue Jul 17 01:03:00 2012"
                         time_modification="Tue Jun 19 19:13:22 2012" />
        <observations epoch_first="Tue Jun 19 18:00:00 2012"
                      epoch_last="Tue Jun 19 18:59:59 2012"
                      epochs="3414"
                      epochs_ratio="94.83">
          <mask elevation="03 degrees"
                obs_expected="34931"
                obs_have="29039"
                obs_ratio="83.13" />
          <mask elevation="10 degrees"
                obs_expected="30649"
                obs_have="29021"
                obs_ratio="94.69" />
          <mask elevation="15 degrees"
                obs_expected="25585"
                obs_have="24097"
                obs_ratio="94.18" />
        </observations>
      </control>
    </file>
    <file name="/cheb171t.12o"
          error="0"
          interval="1"
          session="t">
      <control date="Tue Jun 19 21:04:22 2012"
               level="3">
        <file_statistics latency="00:12:10"
                         size="3586208"
                         time_creation="Tue Jun 19 20:28:42 2012"
                         time_modification="Tue Jun 19 20:12:09 2012" />
        <observations epoch_first="Tue Jun 19 19:01:21 2012"
                      epoch_last="Tue Jun 19 19:59:59 2012"
                      epochs="3289"
                      epochs_ratio="91.36">
          <mask elevation="03 degrees"
                obs_expected="34885"
                obs_have="26921"
                obs_ratio="77.17" />
          <mask elevation="10 degrees"
                obs_expected="28818"
                obs_have="26880"
                obs_ratio="93.28" />
          <mask elevation="15 degrees"
                obs_expected="24343"
                obs_have="22503"
                obs_ratio="92.44" />
        </observations>
      </control>
      <control date="Tue Jun 19 23:01:02 2012"
               level="3">
        <file_statistics latency="00:12:10"
                         size="3586208"
                         time_creation="Tue Jun 19 20:28:42 2012"
                         time_modification="Tue Jun 19 20:12:09 2012" />
        <observations epoch_first="Tue Jun 19 19:01:21 2012"
                      epoch_last="Tue Jun 19 19:59:59 2012"
                      epochs="3289"
                      epochs_ratio="91.36">
          <mask elevation="03 degrees"
                obs_expected="34885"
                obs_have="26921"
                obs_ratio="77.17" />
          <mask elevation="10 degrees"
                obs_expected="28818"
                obs_have="26880"
                obs_ratio="93.28" />
          <mask elevation="15 degrees"
                obs_expected="24343"
                obs_have="22503"
                obs_ratio="92.44" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:12:10"
                         size="3586208"
                         time_creation="Tue Jun 19 20:28:42 2012"
                         time_modification="Tue Jun 19 20:12:09 2012" />
        <observations epoch_first="Tue Jun 19 19:01:21 2012"
                      epoch_last="Tue Jun 19 19:59:59 2012"
                      epochs="3289"
                      epochs_ratio="91.36">
          <mask elevation="03 degrees"
                obs_expected="34885"
                obs_have="26921"
                obs_ratio="77.17" />
          <mask elevation="10 degrees"
                obs_expected="28818"
                obs_have="26880"
                obs_ratio="93.28" />
          <mask elevation="15 degrees"
                obs_expected="24343"
                obs_have="22503"
                obs_ratio="92.44" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:12:10"
                         size="3586208"
                         time_creation="Tue Jul 17 01:03:01 2012"
                         time_modification="Tue Jun 19 20:12:09 2012" />
        <observations epoch_first="Tue Jun 19 19:01:21 2012"
                      epoch_last="Tue Jun 19 19:59:59 2012"
                      epochs="3289"
                      epochs_ratio="91.36">
          <mask elevation="03 degrees"
                obs_expected="34885"
                obs_have="26921"
                obs_ratio="77.17" />
          <mask elevation="10 degrees"
                obs_expected="28818"
                obs_have="26880"
                obs_ratio="93.28" />
          <mask elevation="15 degrees"
                obs_expected="24343"
                obs_have="22503"
                obs_ratio="92.44" />
        </observations>
      </control>
    </file>
    <file name="/cheb171u.12o"
          error="0"
          interval="1"
          session="u">
      <control date="Tue Jun 19 23:55:49 2012"
               level="3">
        <file_statistics latency="00:13:17"
                         size="4300098"
                         time_creation="Tue Jun 19 21:23:49 2012"
                         time_modification="Tue Jun 19 21:13:16 2012" />
        <observations epoch_first="Tue Jun 19 20:00:00 2012"
                      epoch_last="Tue Jun 19 20:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="32400"
                obs_ratio="100.00" />
          <mask elevation="10 degrees"
                obs_expected="32400"
                obs_have="32400"
                obs_ratio="100.00" />
          <mask elevation="15 degrees"
                obs_expected="32261"
                obs_have="32261"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:13:17"
                         size="4300098"
                         time_creation="Tue Jun 19 21:23:49 2012"
                         time_modification="Tue Jun 19 21:13:16 2012" />
        <observations epoch_first="Tue Jun 19 20:00:00 2012"
                      epoch_last="Tue Jun 19 20:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="32400"
                obs_ratio="100.00" />
          <mask elevation="10 degrees"
                obs_expected="32400"
                obs_have="32400"
                obs_ratio="100.00" />
          <mask elevation="15 degrees"
                obs_expected="32261"
                obs_have="32261"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:13:17"
                         size="4300098"
                         time_creation="Tue Jul 17 01:03:02 2012"
                         time_modification="Tue Jun 19 21:13:16 2012" />
        <observations epoch_first="Tue Jun 19 20:00:00 2012"
                      epoch_last="Tue Jun 19 20:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32400"
                obs_have="32400"
                obs_ratio="100.00" />
          <mask elevation="10 degrees"
                obs_expected="32400"
                obs_have="32400"
                obs_ratio="100.00" />
          <mask elevation="15 degrees"
                obs_expected="32261"
                obs_have="32261"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171v.12o"
          error="0"
          interval="1"
          session="v">
      <control date="Tue Jun 19 22:36:18 2012"
               level="3">
        <file_statistics latency="00:12:11"
                         size="4775902"
                         time_creation="Tue Jun 19 22:23:57 2012"
                         time_modification="Tue Jun 19 22:12:10 2012" />
        <observations epoch_first="Tue Jun 19 21:00:00 2012"
                      epoch_last="Tue Jun 19 21:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="41079"
                obs_have="36063"
                obs_ratio="87.79" />
          <mask elevation="10 degrees"
                obs_expected="36100"
                obs_have="36022"
                obs_ratio="99.78" />
          <mask elevation="15 degrees"
                obs_expected="28633"
                obs_have="28633"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 00:45:55 2012"
               level="3">
        <file_statistics latency="00:12:11"
                         size="4775902"
                         time_creation="Tue Jun 19 22:23:57 2012"
                         time_modification="Tue Jun 19 22:12:10 2012" />
        <observations epoch_first="Tue Jun 19 21:00:00 2012"
                      epoch_last="Tue Jun 19 21:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="41079"
                obs_have="36063"
                obs_ratio="87.79" />
          <mask elevation="10 degrees"
                obs_expected="36100"
                obs_have="36022"
                obs_ratio="99.78" />
          <mask elevation="15 degrees"
                obs_expected="28633"
                obs_have="28633"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:12:11"
                         size="4775902"
                         time_creation="Tue Jun 19 22:23:57 2012"
                         time_modification="Tue Jun 19 22:12:10 2012" />
        <observations epoch_first="Tue Jun 19 21:00:00 2012"
                      epoch_last="Tue Jun 19 21:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="41079"
                obs_have="36063"
                obs_ratio="87.79" />
          <mask elevation="10 degrees"
                obs_expected="36100"
                obs_have="36022"
                obs_ratio="99.78" />
          <mask elevation="15 degrees"
                obs_expected="28633"
                obs_have="28633"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:12:11"
                         size="4775902"
                         time_creation="Tue Jul 17 01:03:03 2012"
                         time_modification="Tue Jun 19 22:12:10 2012" />
        <observations epoch_first="Tue Jun 19 21:00:00 2012"
                      epoch_last="Tue Jun 19 21:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="41079"
                obs_have="36063"
                obs_ratio="87.79" />
          <mask elevation="10 degrees"
                obs_expected="36100"
                obs_have="36022"
                obs_ratio="99.78" />
          <mask elevation="15 degrees"
                obs_expected="28633"
                obs_have="28633"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171w.12o"
          error="0"
          interval="1"
          session="w">
      <control date="Tue Jun 19 23:32:58 2012"
               level="3">
        <file_statistics latency="00:12:02"
                         size="4530906"
                         time_creation="Tue Jun 19 23:13:51 2012"
                         time_modification="Tue Jun 19 23:12:01 2012" />
        <observations epoch_first="Tue Jun 19 22:00:00 2012"
                      epoch_last="Tue Jun 19 22:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="40662"
                obs_have="34113"
                obs_ratio="83.89" />
          <mask elevation="10 degrees"
                obs_expected="34195"
                obs_have="34048"
                obs_ratio="99.57" />
          <mask elevation="15 degrees"
                obs_expected="28955"
                obs_have="28955"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 01:39:25 2012"
               level="3">
        <file_statistics latency="00:12:02"
                         size="4530906"
                         time_creation="Tue Jun 19 23:13:51 2012"
                         time_modification="Tue Jun 19 23:12:01 2012" />
        <observations epoch_first="Tue Jun 19 22:00:00 2012"
                      epoch_last="Tue Jun 19 22:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="40662"
                obs_have="34113"
                obs_ratio="83.89" />
          <mask elevation="10 degrees"
                obs_expected="34195"
                obs_have="34048"
                obs_ratio="99.57" />
          <mask elevation="15 degrees"
                obs_expected="28955"
                obs_have="28955"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="00:12:02"
                         size="4530906"
                         time_creation="Tue Jun 19 23:13:51 2012"
                         time_modification="Tue Jun 19 23:12:01 2012" />
        <observations epoch_first="Tue Jun 19 22:00:00 2012"
                      epoch_last="Tue Jun 19 22:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="40662"
                obs_have="34113"
                obs_ratio="83.89" />
          <mask elevation="10 degrees"
                obs_expected="34195"
                obs_have="34048"
                obs_ratio="99.57" />
          <mask elevation="15 degrees"
                obs_expected="28955"
                obs_have="28955"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="00:12:02"
                         size="4530906"
                         time_creation="Tue Jul 17 01:03:03 2012"
                         time_modification="Tue Jun 19 23:12:01 2012" />
        <observations epoch_first="Tue Jun 19 22:00:00 2012"
                      epoch_last="Tue Jun 19 22:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="40662"
                obs_have="34113"
                obs_ratio="83.89" />
          <mask elevation="10 degrees"
                obs_expected="34195"
                obs_have="34048"
                obs_ratio="99.57" />
          <mask elevation="15 degrees"
                obs_expected="28955"
                obs_have="28955"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
    <file name="/cheb171x.12o"
          error="0"
          interval="1"
          session="x">
      <control date="Wed Jun 20 23:14:05 2012"
               level="3">
        <file_statistics latency="03:15:35"
                         size="4569693"
                         time_creation="Wed Jun 20 04:18:52 2012"
                         time_modification="Wed Jun 20 03:15:34 2012" />
        <observations epoch_first="Tue Jun 19 23:00:00 2012"
                      epoch_last="Tue Jun 19 23:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35807"
                obs_have="34482"
                obs_ratio="96.30" />
          <mask elevation="10 degrees"
                obs_expected="34509"
                obs_have="34470"
                obs_ratio="99.89" />
          <mask elevation="15 degrees"
                obs_expected="33038"
                obs_have="33038"
                obs_ratio="100.00" />
        </observations>
      </control>
      <control date="Thu Jul 19 07:52:05 2012"
               level="3">
        <file_statistics latency="03:15:35"
                         size="4569693"
                         time_creation="Tue Jul 17 01:03:04 2012"
                         time_modification="Wed Jun 20 03:15:34 2012" />
        <observations epoch_first="Tue Jun 19 23:00:00 2012"
                      epoch_last="Tue Jun 19 23:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="35807"
                obs_have="34482"
                obs_ratio="96.30" />
          <mask elevation="10 degrees"
                obs_expected="34509"
                obs_have="34470"
                obs_ratio="99.89" />
          <mask elevation="15 degrees"
                obs_expected="33038"
                obs_have="33038"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
  </station>
</QC>
