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      <control date="Fri Sep  3 03:31:40 2021"
               level="3">
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                         size="11187728"
                         time_creation="Tue Aug 31 01:53:30 2021"
                         time_modification="Thu Aug  5 00:07:14 2021" />
        <observations epoch_first="Wed Aug  4 23:00:00 2021"
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                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
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          <mask elevation="10 degrees"
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          <mask elevation="15 degrees"
                obs_expected="30440"
                obs_have="30440"
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      </control>
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  </station>
</QC>
