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        <observations epoch_first="Mon Feb 19 23:00:00 2007"
                      epoch_last="Mon Feb 19 23:59:59 2007"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="32381"
                obs_have="27028"
                obs_ratio="83.47" />
          <mask elevation="10 degrees"
                obs_expected="26467"
                obs_have="23801"
                obs_ratio="89.93" />
          <mask elevation="15 degrees"
                obs_expected="24046"
                obs_have="22276"
                obs_ratio="92.64" />
        </observations>
      </control>
    </file>
  </station>
</QC>
