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      <bbk:Obs TIME_PERIOD="1971-08" OBS_VALUE="18.846" BBK_DIFF="552.6"/>
      <bbk:Obs TIME_PERIOD="1971-07" OBS_VALUE="2.888" BBK_DIFF="102.2"/>
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      <bbk:Obs TIME_PERIOD="1971-04" OBS_VALUE="211.512" BBK_DIFF="6628.1"/>
      <bbk:Obs TIME_PERIOD="1971-03" OBS_VALUE="-3.24" BBK_DIFF="96.2"/>
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  </bbk:DataSet>
</CompactData>
