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        <file_statistics latency="00:03:26"
                         size="4336216"
                         time_creation="Tue Apr 24 00:51:07 2012"
                         time_modification="Tue Mar 27 22:02:08 2012" />
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                      epochs="1945"
                      epochs_ratio="54.03">
          <mask elevation="03 degrees"
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                obs_have="14802"
                obs_ratio="62.27" />
          <mask elevation="10 degrees"
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          <mask elevation="15 degrees"
                obs_expected="17847"
                obs_have="12101"
                obs_ratio="67.80" />
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  </station>
</QC>
