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        <observations epoch_first="Sun Jan 31 23:00:00 2021"
                      epoch_last="Sun Jan 31 23:59:59 2021"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
                obs_expected="42842"
                obs_have="39717"
                obs_ratio="92.71" />
          <mask elevation="10 degrees"
                obs_expected="35521"
                obs_have="35490"
                obs_ratio="99.91" />
          <mask elevation="15 degrees"
                obs_expected="30225"
                obs_have="30225"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
  </station>
</QC>
