TABLE 2 =< Cont'd. Pennsylvania, Pittsburgh Collection 1957 1958 Period mo Sr70/m2 July 3 to December 31 --~ Average 2 mo sr90/m --- Cumalgsive 079 /mi.? sr? 2.07 Z 0.21 -- 0057 2 0-03 2.64 2 0.21| 77 January 0057 0057 *2 0203 0.03 February 0.29 + 0.02 12 March O41 0.L2 2* 0.02 0.02 Oehl 2 0.02 3.36 ** 0.21 12 12 April 1.20 2 0.0 0987 2 O0L7 4.23 2050 15 95 May 0.76 2 0004 0.73 4 0.0 O79 2 0.0, 4.98 £ 0651 5 11 June 2.28 20.14 4 2 2 ol 7619 2 0052 1 0.54 2 0.5, 2015 t 0.12 - July August September October November December * . Sr70 Valuss extrapolated to midpoint of collection period. -13- 3 17 Precipitation (inches) --