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        <observations epoch_first="Fri Jan  1 23:00:00 2021"
                      epoch_last="Fri Jan  1 23:59:59 2021"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="39846"
                obs_have="37194"
                obs_ratio="93.34" />
          <mask elevation="10 degrees"
                obs_expected="34884"
                obs_have="34884"
                obs_ratio="100.00" />
          <mask elevation="15 degrees"
                obs_expected="33369"
                obs_have="33369"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
  </station>
</QC>
