TABLE 2 - Cont'd. California, Richmond Collection Period me Sr90/mi® Cumulative me Sr9OAnd 0 P Sr Precipitation (inches) 1958 March 20 to April 3 %o April 30 June July heli7 2% 0,07 3.00 20,05 0.38 2 0,01 0 £ 0.01 0.21 2% 0.00 0.36 20.01 0.12 £0.00 0.016 2 0.003 0.062 2 02003 0.020 2 0.001 2e74 2 1-04 4ett # 10h 20 25 1 6 ll 2097 20 ‘465 # 1605 4.70 2 1,08 6 12 19 * 7 September October November December * 6.644 Values extrapolated to midpoint of colloction periods 0647 0