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                obs_have="6"
                obs_ratio="100.00" />
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      </control>
      <control date="Mon Mar 26 05:41:21 2012"
               level="3">
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                         time_creation="Sat Mar 24 00:56:07 2012"
                         time_modification="Sat Feb 25 01:13:04 2012" />
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          <mask elevation="03 degrees"
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          <mask elevation="10 degrees"
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</QC>
