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      </control>
      <control date="Thu Mar 21 06:08:21 2019"
               level="3">
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                         size="8506134"
                         time_creation="Mon Mar 18 06:40:45 2019"
                         time_modification="Wed Feb 20 00:11:15 2019" />
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                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
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                obs_have="36601"
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          <mask elevation="10 degrees"
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                obs_have="28726"
                obs_ratio="100.00" />
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  </station>
</QC>
