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      </control>
      <control date="Wed Aug  8 04:23:30 2012"
               level="3">
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                         time_creation="Mon Aug  6 00:53:58 2012"
                         time_modification="Tue Jul 10 00:08:15 2012" />
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                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
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                obs_have="28162"
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  </station>
</QC>
