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          <mask elevation="03 degrees"
                obs_expected="36308"
                obs_have="17031"
                obs_ratio="46.91" />
          <mask elevation="10 degrees"
                obs_expected="29352"
                obs_have="17013"
                obs_ratio="57.96" />
          <mask elevation="15 degrees"
                obs_expected="23314"
                obs_have="12815"
                obs_ratio="54.97" />
        </observations>
      </control>
    </file>
  </station>
</QC>
