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          <mask elevation="03 degrees"
                obs_expected="39508"
                obs_have="36555"
                obs_ratio="92.53" />
          <mask elevation="10 degrees"
                obs_expected="34689"
                obs_have="33549"
                obs_ratio="96.71" />
          <mask elevation="15 degrees"
                obs_expected="30113"
                obs_have="28985"
                obs_ratio="96.25" />
        </observations>
      </control>
    </file>
  </station>
</QC>
