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          <mask elevation="10 degrees"
                obs_expected="35599"
                obs_have="33887"
                obs_ratio="95.19" />
          <mask elevation="15 degrees"
                obs_expected="34824"
                obs_have="33169"
                obs_ratio="95.25" />
        </observations>
      </control>
    </file>
  </station>
</QC>
