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        <observations epoch_first="Tue Jul 7 23:00:00 2009"
                      epoch_last="Tue Jul 7 23:59:59 2009"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="43453"
                obs_have="39425"
                obs_ratio="90.73" />
          <mask elevation="10 degrees"
                obs_expected="32615"
                obs_have="32615"
                obs_ratio="100.00" />
          <mask elevation="15 degrees"
                obs_expected="23891"
                obs_have="23891"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
  </station>
</QC>
