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          <mask elevation="03 degrees"
                obs_expected="37037"
                obs_have="29801"
                obs_ratio="80.46" />
          <mask elevation="10 degrees"
                obs_expected="29283"
                obs_have="26119"
                obs_ratio="89.20" />
          <mask elevation="15 degrees"
                obs_expected="23612"
                obs_have="23027"
                obs_ratio="97.52" />
        </observations>
      </control>
    </file>
  </station>
</QC>
