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          <mask elevation="03 degrees"
                obs_expected="39136"
                obs_have="37050"
                obs_ratio="94.67" />
          <mask elevation="10 degrees"
                obs_expected="30331"
                obs_have="30306"
                obs_ratio="99.92" />
          <mask elevation="15 degrees"
                obs_expected="23618"
                obs_have="23600"
                obs_ratio="99.92" />
        </observations>
      </control>
    </file>
  </station>
</QC>
