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        <observations epoch_first="Thu Jan 18 23:00:00 2007"
                      epoch_last="Thu Jan 18 23:59:59 2007"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="34027"
                obs_have="32808"
                obs_ratio="96.42" />
          <mask elevation="10 degrees"
                obs_expected="29659"
                obs_have="29659"
                obs_ratio="100.00" />
          <mask elevation="15 degrees"
                obs_expected="26929"
                obs_have="26929"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
  </station>
</QC>
