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          <mask elevation="03 degrees"
                obs_expected="36942"
                obs_have="35987"
                obs_ratio="97.41" />
          <mask elevation="10 degrees"
                obs_expected="32198"
                obs_have="32072"
                obs_ratio="99.61" />
          <mask elevation="15 degrees"
                obs_expected="28127"
                obs_have="28019"
                obs_ratio="99.62" />
        </observations>
      </control>
    </file>
  </station>
</QC>
