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      <bbk:Obs TIME_PERIOD="1972-02" OBS_VALUE="266.624" BBK_DIFF="44.4" BBK_DIFF_Y="483.5"/>
      <bbk:Obs TIME_PERIOD="1972-01" OBS_VALUE="184.705" BBK_DIFF="-9.9" BBK_DIFF_Y="704.3"/>
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  </bbk:DataSet>
</CompactData>
