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        <observations epoch_first="Wed Jun 23 23:00:00 2010"
                      epoch_last="Wed Jun 23 23:59:59 2010"
                      epochs="3584"
                      epochs_ratio="99.56">
          <mask elevation="03 degrees"
                obs_expected="40961"
                obs_have="36630"
                obs_ratio="89.43" />
          <mask elevation="10 degrees"
                obs_expected="35570"
                obs_have="33830"
                obs_ratio="95.11" />
          <mask elevation="15 degrees"
                obs_expected="27609"
                obs_have="26725"
                obs_ratio="96.80" />
        </observations>
      </control>
    </file>
  </station>
</QC>
