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      </control>
      <control date="Mon Apr 22 05:01:17 2019"
               level="3">
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                         size="9482526"
                         time_creation="Fri Apr 19 01:52:51 2019"
                         time_modification="Sun Mar 24 00:14:56 2019" />
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                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
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                obs_have="36348"
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  </station>
</QC>
