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          <mask elevation="03 degrees"
                obs_expected="30616"
                obs_have="27693"
                obs_ratio="90.45" />
          <mask elevation="10 degrees"
                obs_expected="25332"
                obs_have="24757"
                obs_ratio="97.73" />
          <mask elevation="15 degrees"
                obs_expected="22661"
                obs_have="22650"
                obs_ratio="99.95" />
        </observations>
      </control>
    </file>
  </station>
</QC>
