Table 2 Plutonium-239 in Air, Bikini No. 1 Daily Values* (pCi/n>) Collection period 5/29/70 through 6/12/70 1. <0.7x 107 5. 5.5X 107" 9. 2.5X 107" 13, 2.6X 107" 2. 0.7 x10 6. 4.o x10 10. 4.8 x 107 1h. ko x 1074 3. 1.2 xX 107" 7. 7.9X 1074 ll. 6.1 X 1074 he 7.2 x 1074 8. 4.7 X 107" 12. 1.2x107 *Background in U.S. in 1968 was about 0.4 X 1074 pCci/m. Station was moved from upwind to downwind side of lagoon road after the second day.