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          <mask elevation="10 degrees"
                obs_expected="33215"
                obs_have="27739"
                obs_ratio="83.51" />
          <mask elevation="15 degrees"
                obs_expected="29127"
                obs_have="25700"
                obs_ratio="88.23" />
        </observations>
      </control>
    </file>
  </station>
</QC>
