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          session="x">
      <control date="Fri Jul  2 07:04:24 2021"
               level="3">
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                         size="9936542"
                         time_creation="Tue Jun 29 01:54:34 2021"
                         time_modification="Fri Jun  4 10:30:10 2021" />
        <observations epoch_first="Wed Jun  2 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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                obs_expected="25839"
                obs_have="25839"
                obs_ratio="100.00" />
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</QC>
