TABLE 3 = Cont'd. Columbia, Bogota Collection Period 1957 me Sr90 fri. CS Sr90 to October No vember 000, z 20.01 0.01 “= 0.05 2 0.01 Sample not available December 30,01 0006 2 0.02 January 0.0, 2 0.01 0.010 2 0.02 le February 0.04 Z 0.01 Oolk 7 0.02 7) March 0.12 % 0.01 0026 % 0.02 April 0.03 2 0,02 0029 F 0003 33 May June July August September * Precipitation (inches ) August September 1958 Cumulative me Sr90/mi2 Values extrapolated to midpoint of collection pericd. ~ 22 o =-_