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          <mask elevation="10 degrees"
                obs_expected="32725"
                obs_have="28648"
                obs_ratio="87.54" />
          <mask elevation="15 degrees"
                obs_expected="28474"
                obs_have="26940"
                obs_ratio="94.61" />
        </observations>
      </control>
    </file>
  </station>
</QC>
