INSTITUTEOFNUCLEAR SCIENCES Report 113/- wom RADIOISOTOPESIN RAINWATER Report No 73, Period: May 1968 Station - Gracefield, Lower Hutt, New Zealand Samplingperiod start ; d-1 | Activity: finish or00 r | S$ 41°14' Microcuries/sq. mile 146 Ba 137 Cs 149 £ 11.0 Til 9¢ £11 , me ee ge 1 795 * 28 fi2 * 31 (275)* (307)* (43)* /Sr 90 | 1,17 Rain, inches ;| 8.89 | 0.85 1.23 or average for 968; (350)* (17,900) . 8,360 4 lad (4240)* ceedeee one lor average for 368 1000.5 30 (385)* 55)* 404.0 987 + 31 4O4.0 (330)* —. 95.5(34)* 43.2 Accumulaved total 155 = an 45,400 +380 _—— 1 , 115 5 1.35 (45) . &9.0 | 4.12 | ; Monchly pot sample wee - —_ 1.39 ce eee 1.09 . . 1.23 ee 38.96 wae “90 586 ae e 2.59 ee Monthly pot sample —- — ee ee we ee ee ee 1 Montnly pot t sample ame eepeee beeee 53,740 * 392; 11054 51.5, (21,1u0)* ‘ Monthly pot sample Fe a meme me me ome ee ep aetme ve ee ee ee fe eee 907 + 29 ee de, 45,400 2380 Remarks 31.24 0.90 | news dee mee (17,900)* : Accumulated total weee ee 137 1 fc diamecer. a OeRa Sr (58)* |} 227.3 me ee ee 8-1 | Cs . “(217)* (48)* or average tor 968{ _. 9-2 90 vita ne ee ee ee + weeee ee -/Sr ef i ee ee ee me fe ee ee Aceumulaced total 7-1] 140 -61 t 31 (259)* 123 2 8 7-1 Ba (78)* Accumulatedcoral|6f2+27 ) 4or average for 9A8 ; Stainless steel collector iv +8 (58.0)* 6-1 E 174°55! , (375)* | ye ~ 1.10 . 4G. AS Ae * microcuries per square kilometer Note: Errors quoted are purely counting errors and do not include experimenial errors or calibration uncertainicies.