0.3 J oo | a ~_— ; @ ' 5 ' * ; L ; Tau ” Oo , io RP r 0.2 + o rte po E 2 c x < | er c = > pa povef _ ce > ' om = r rg re oO oO ot al ' t Po + So 4 o\ —— 1 = oO 5 panna FL4 pf o eee ponemeed \ } Q. , ‘ PF = 1 so | oy a ' O.1 — . ft ‘ ; ! c e fe tf ;me ; 1{ & ro PP 1 r ; O l 2 3 4 Station 5 6 7 number 8 9 2 10 Figure 2. Histogram showing beta-activity of ashed samples of bottom material and pumped plankton from ten stations at Rongelap Atoll in August 1958, -:pO® ARCHIVES .