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      <control date="Fri Feb 22 08:47:12 2013"
               level="3">
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                         size="8001961"
                         time_creation="Wed Feb 20 01:12:24 2013"
                         time_modification="Thu Jan 24 00:08:36 2013" />
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                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
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          <mask elevation="15 degrees"
                obs_expected="24550"
                obs_have="24550"
                obs_ratio="100.00" />
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  </station>
</QC>
