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      <control date="Wed Sep 18 02:53:05 2019"
               level="3">
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                         size="9219571"
                         time_creation="Sun Sep 15 01:52:03 2019"
                         time_modification="Tue Aug 20 15:08:12 2019" />
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                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
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          <mask elevation="15 degrees"
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                obs_have="34811"
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  </station>
</QC>
