a TABLE 2 Ap cae TOTAL BETA ACTIVITY OF WEEKLY RAINWATER COLLECTIONS FOUR DAYS APTER COLLECTION DATE OF COLLECTION FROM TO DEPOSITION mci/km? RAINFALL om 29.3469 5.4.69 12,4, 69 19,4, 69 5.4.69 12,4.69 19,4.69 264.69 1.5 2.2 1.4 2.0 2923.69 264.69 Fel 2743 26.4.69 345.69 0.2 1.0 345.69 10.5.69 1.3 10.5.69 17.25.69 1.0 24.5.69 32.5.69 24.5.69 1.6 0.2 0.9 w 26.4, 459 31.5,69 367 14.6 0.2 0.7 746.69 8.9 14.6.69 <O0o1 0.9 0.3 70 1.5 31.5.69 28.6,69 1.5 9.5 16 12.3 51.4 24 0.2 1.5 0.2 0.8 21,6,69 28,6.69 2nd QUARTER 1969 28.3209 3.4.69 3.4.69 11.4.69 24,469 2.5.69 11.4.69 18.4.69 28.43.69 205209 18.4.69 244.69 0.3 1.2 £05469 345 9.5269 0.3 £0.1 3.6 0.3 1.2 5D | 0.5 5 16.5.69 16,5.69 <0, £0.21 E 23.65.69 30.5,69 0.3 2.6 2.5.69 30.5.69 1.0 5.1 30.5269 6.6.69 23.5.59 6.6,69 0.1 0.7 0.1 20 1.0 1326.69 £Oel 27.6.69 0.2 1.5 009 303 27 5.4 14,3 38 13.6.69 20.6, 69 3005469 | 27,6.69 20.6.69 59 1.7 9.5.69 © 25 706,69 14,6,69 21,6,69 mS 26 228 0.4 17.5.69 31.5.69 pci/litre 6.2 5.5 7.8 7.8 | 5 i CONCENTRATION 2nd QUARTER 1969 TRACE 0.5 PIT 0.8 = Le