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          <mask elevation="03 degrees"
                obs_expected="43921"
                obs_have="34681"
                obs_ratio="78.96" />
          <mask elevation="10 degrees"
                obs_expected="35303"
                obs_have="34596"
                obs_ratio="98.00" />
          <mask elevation="15 degrees"
                obs_expected="27970"
                obs_have="27543"
                obs_ratio="98.47" />
        </observations>
      </control>
    </file>
  </station>
</QC>
