. . list, The respectively, composi te results each day and Bikini All were compositing for Eneu were value for Z~5Pu background order to assess the daily half of the individual results obtaine G Dy analyzing by station the 2“~qPu results results 2-]’”:Puin air the colpcsite ranged over pCi/m3. in the U.S. variation filters from one half of t[le filter for the total fro~l 0.6 x 10-4 0.4 x 10-4 ;or ..ik ni and Er]cu. For comparison during in air station sampling pe,’iod. For 3 pCi /m to 5.4 i 10-4 Dci/m3. 1968 was tie average nl-:1.-. > ..c 0.4 x 10-4 Uul. concentration, the cernainic; one- }Jo. 1 on Bikini were analyzed separately. These results are listed in Table El. The results ranged from -4 -4 <0.7 x 10 pCi/m3 to 7.’3 x 10 pCi/m3. The average for all samples at this -4 station is 4 x 10 pcl/E3 which compares quite favorably witr the value of 5.4 x 10-4 pCi/rn3 for the composite.