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<br />I• <br />Date <br />8-09-77 <br />8-~3-77~ <br />8-~7-77 <br />8-21=77 <br />8-25`n <br />8=29=Z7 <br /> <br />1977 <br />Concentration (ua/m31 <br />36 <br />22 . <br />15, <br />21 . <br />. 39:. <br />321 <br />Arittimetric Mean ~ 33.5 <br />Geometric Mean ~ 28.5 <br />,-1 <br />~• <br />