(RR came nea tt haagmtey ee gy a ven INS §0/113/-WM RADIOISOTOPES IN RAINWATER Report No 72 Period: January - April 1968 Station: Gracefield, Lower Hutt, New Zealand, S 41° 14’ Sampling Period start finish 1-2 2-1 Acoumlated total average for 1968 Activity: microcur 2s /sq.mile s pat4o 248 + 29 (96) C5137 200 + 12 (T1)* + 20 24s = + 2 200 = (96) (TT) Stainless steel collector 1 ft diameter Balto csi3T Srg0 Inches | 0.81 4.69 0.81 469 3r90 Rain 5-1 G2 Accumulated total + 20 248 + + 12 200 + average for 1968 (96) (77) 3-1 4&1 accpBulated total average for 1968 {4-1 5-1 } accumulated total average for 1968 41.5 43 22.3 + 1.6 289 + 20 225 + 12 (16)* (8 6)* 0.81 1.33 0.54 0.66 (112)* (85.6)" 0.77 1.99 + 2Hoe + ‘hse 0.70 14.36 0.74 22.59 + 925 — 25 (202) | R k emarks monthly pot sample recovery so low, no results recorded i 2a2-1 E 174° 55° monthly pot sample monthly pot sample + 386 + 30 (148. 6}* * Microcuries per square kilometer Note: Errors quoted are purely counting errors and do not include experimental errors or calibratia uncertainties.