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      <control date="Mon Sep 17 04:30:21 2018"
               level="3">
        <file_statistics latency="00:11:30"
                         size="4736993"
                         time_creation="Fri Sep 14 01:52:40 2018"
                         time_modification="Sun Aug 19 00:11:29 2018" />
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                      epochs_ratio="97.36">
          <mask elevation="03 degrees"
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          <mask elevation="15 degrees"
                obs_expected="20410"
                obs_have="19824"
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  </station>
</QC>
