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      <bbk:Obs TIME_PERIOD="1972-06" OBS_VALUE="-96.764" BBK_DIFF="-247.1" BBK_DIFF_Y="-64.1"/>
      <bbk:Obs TIME_PERIOD="1972-05" OBS_VALUE="65.786" BBK_DIFF="272.0" BBK_DIFF_Y="61.0"/>
      <bbk:Obs TIME_PERIOD="1972-04" OBS_VALUE="-38.244" BBK_DIFF="-131.3" BBK_DIFF_Y="-606.3"/>
      <bbk:Obs TIME_PERIOD="1972-03" OBS_VALUE="122.113" BBK_DIFF="4487.8" BBK_DIFF_Y="93.1"/>
      <bbk:Obs TIME_PERIOD="1972-02" OBS_VALUE="-2.783" BBK_DIFF="-102.4" BBK_DIFF_Y="93.9"/>
      <bbk:Obs TIME_PERIOD="1972-01" OBS_VALUE="116.734" BBK_DIFF="200.5" BBK_DIFF_Y="251.0"/>
      <bbk:Obs TIME_PERIOD="1971-12" OBS_VALUE="-116.206" BBK_DIFF="-179.0"/>
      <bbk:Obs TIME_PERIOD="1971-11" OBS_VALUE="147.027" BBK_DIFF="15195.2"/>
      <bbk:Obs TIME_PERIOD="1971-10" OBS_VALUE="-0.974" BBK_DIFF="98.5"/>
      <bbk:Obs TIME_PERIOD="1971-09" OBS_VALUE="-64.633" BBK_DIFF="-89.0"/>
      <bbk:Obs TIME_PERIOD="1971-08" OBS_VALUE="-34.199" BBK_DIFF="-141.1"/>
      <bbk:Obs TIME_PERIOD="1971-07" OBS_VALUE="83.26" BBK_DIFF="241.2"/>
      <bbk:Obs TIME_PERIOD="1971-06" OBS_VALUE="-58.965" BBK_DIFF="-244.3"/>
      <bbk:Obs TIME_PERIOD="1971-05" OBS_VALUE="40.861" BBK_DIFF="440.9"/>
      <bbk:Obs TIME_PERIOD="1971-04" OBS_VALUE="7.554" BBK_DIFF="-88.1"/>
      <bbk:Obs TIME_PERIOD="1971-03" OBS_VALUE="63.244" BBK_DIFF="239.2"/>
      <bbk:Obs TIME_PERIOD="1971-02" OBS_VALUE="-45.427" BBK_DIFF="41.2"/>
      <bbk:Obs TIME_PERIOD="1971-01" OBS_VALUE="-77.289"/>
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  </bbk:DataSet>
</CompactData>
