Table 3, (continued) Plankton net Number Meshes Mate- eter Plate No. Atoll Island 19072 Ailinginae 18073 19074 6076 6077 " " Rongelap " 6078 6079 6121 6122 * Diam - " " " " Dateof Dateof first Ash counting basis Wet basis 20 " " 12 " 10-23-55 10-24-55 " 7-23-56 " 11-26-55 11-27-55 " 8-23-56 " 34 . 94 . 80 2.2 19 20 7-17-57 designation per inch rial of net collectinches ing MojiriEnibuk " mo Rongelap " 2 1 2 20 20 157 74 151 170 170 Nylon " " Silk " Rongelap 6 74 Nylon Kabelte " Kabelle 20 " 6 170 170 74 " " " First count " " i. 7-24-56 " 7-18-57 " " in uc/kg* 5.5 4.6 7. 4 4} 178 20**** 45 72 4.0 8-16-57 14 8-16-57 93 As of collecting date for 1954-55, and as of counting date for 1956-57, samples. *e Last count 9-6-55. Plate missing. *#* Low plate count; large error. x*&* Decay curve rose, invalidating the entry. . 20 6.0 Decay slope from date of first counting to October 30, 1957 - 1.53 - 1.71 - 1.73 - 5.3 -1i.4 -- 4.4 - 3.7 - 1.10 ' ‘©

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