TABLE 4 STRONTIUM 90 IN PITTSBURGH, PENNSYLVANIA FALLOUT (Precipitation Collections) Collection Period from to 2-25-55 7-758 7-7-58 7-8-58 7-8-5868 7-11-58 7-11-58 wcfu? SEUSS oeArve “ge ese ISS -- -- 1016 2 01003 U0 202K bye ihe oe 3 0.02 1288 2 ori, BEL AOD 99s onl 27 ss 1.25 7-12-58 O16) gore, BBTTOAW 9 SO st 0.26 7-12-58 7-14-58 01076 2 02006 36 2.0.25 GS a ont 3 6 0428 7-14-58 7215658 7715-56 1-16-58 7-16-58 7-21-58 BiB O83 = be 50 126 165 0429 trace 7-21-58 7-22-58 Teh SO 59 0488 7-22-58 7-23-58 Orne 4 orons PUSH 20025 OcORe 2 Oro 32669 # 0425 061903 06010 5ao a o.ag 01080 0003 51.94 # 0.25 23 : 0.3 25 6 0035 7-23-58 7-2h-58 O1160 : or010 32011 2 0.25 06 o a 0.40 7-24-58 7-25-58 Orig z ococe 3213. 20.25 27 goes 3 0.03 7-25-58 7-29-58 oie 2 o1008 32030 0.25 HR a gto 6 66 1.0 7-29-58 7-30-58 hon O52 oa FO 0625 7-30-58 0107 2 orale 32256 20025 7-31-58 01189 3 Oro1g 3 a 1.13 7-31-58 8-1-58 3's Sos 3 0037 8-1-58 8-3-58 51039 2 oro 32602025 §-3-58 B-7-58 8-7-58 8-8-58 8=8-58 8-12-58 * ** =-- 31.04 2 0.2) --- 2 E007 sss oes pl to5 3256 # 0625 Origa 2 osoor 327k 20025 165 a 2 O5 Bh toe Olo78 = 0100s 32822025 O32 force 3557025 B30 SCE oe 33.21 & 0625 3 al F tae 006s : ood |B 38 078 1.88 ane bah ag 0417 LIT ie 0209 B+ The cumulative error term represents the standard error of duplicate analyses. Values extrapolated to midpoint of sampling period. - lh - is --