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          <mask elevation="10 degrees"
                obs_expected="27971"
                obs_have="27936"
                obs_ratio="99.87" />
          <mask elevation="15 degrees"
                obs_expected="25116"
                obs_have="25116"
                obs_ratio="100.00" />
        </observations>
      </control>
    </file>
  </station>
</QC>
