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        <observations epoch_first="Thu Apr 30 23:00:00 2020"
                      epoch_last="Thu Apr 30 23:59:59 2020"
                      epochs="2118"
                      epochs_ratio="58.83">
          <mask elevation="03 degrees"
                obs_expected="40645"
                obs_have="23208"
                obs_ratio="57.10" />
          <mask elevation="10 degrees"
                obs_expected="33150"
                obs_have="19536"
                obs_ratio="58.93" />
          <mask elevation="15 degrees"
                obs_expected="30980"
                obs_have="18268"
                obs_ratio="58.97" />
        </observations>
      </control>
    </file>
  </station>
</QC>
