Eniwetok Atoll Eniwetok Atoll 11°25! P- o 358 © P-10 — 4.06 011.3 P-40 p-12 P-11 Oo Oo : 11°20! P-3 ° 0.000434 5 -0.00244 0.424 Oo oO Oo © P-i P-7 0.000346 ° 53,2 11°15! (a) | — = Gross beta activity 106 d/m/g of dry plankton | Figure 2. oe 0.000374 0.000854 OP-2 ° 162°05! 4 | i ° 162°10! | | nr 162°05 (b) | Pre-Wahoo plankton.({a) Location of plankton stations; plankton samples. | [ 162°10" (b) gross beta activity of |