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          <mask elevation="03 degrees"
                obs_expected="34298"
                obs_have="29065"
                obs_ratio="84.74" />
          <mask elevation="10 degrees"
                obs_expected="30485"
                obs_have="28171"
                obs_ratio="92.41" />
          <mask elevation="15 degrees"
                obs_expected="27497"
                obs_have="26568"
                obs_ratio="96.62" />
        </observations>
      </control>
    </file>
  </station>
</QC>
