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                obs_ratio="100.00" />
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      </control>
      <control date="Sat Jun  2 08:37:22 2012"
               level="3">
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                         size="4300098"
                         time_creation="Thu May 31 01:02:49 2012"
                         time_modification="Fri May  4 05:50:39 2012" />
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                      epoch_last="Thu May  3 23:59:59 2012"
                      epochs="3600"
                      epochs_ratio="100.00">
          <mask elevation="03 degrees"
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                obs_have="32400"
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          <mask elevation="10 degrees"
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          <mask elevation="15 degrees"
                obs_expected="30532"
                obs_have="30532"
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  </station>
</QC>
