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          <mask elevation="10 degrees"
                obs_expected="29080"
                obs_have="27138"
                obs_ratio="93.32" />
          <mask elevation="15 degrees"
                obs_expected="27169"
                obs_have="25678"
                obs_ratio="94.51" />
        </observations>
      </control>
    </file>
  </station>
</QC>
