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                      epoch_last="Tue Jan 31 23:59:56 2012"
                      epochs="3161"
                      epochs_ratio="87.81">
          <mask elevation="03 degrees"
                obs_expected="35022"
                obs_have="23450"
                obs_ratio="66.96" />
          <mask elevation="10 degrees"
                obs_expected="30616"
                obs_have="22410"
                obs_ratio="73.20" />
          <mask elevation="15 degrees"
                obs_expected="27487"
                obs_have="20996"
                obs_ratio="76.39" />
        </observations>
      </control>
    </file>
  </station>
</QC>
