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Oo
Ficoouries per Gram of Dry Werght
00
ag
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an
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b
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o
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il
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IHU ITTRH TARE
40
Mar.
Fig. 2.
0
=6200
April
3805 10
May
20
380s«*10s“S5 20
June
9
July
Ib
=625 30:5 (10
Aug.
Radionuclides in plankton from the central Pacific, March~-August, 1962.
Comparison of Zn®5 (triangles), Zr95-Nb95 (squares) and Cel41,144 (circles)
Open circles, squares and triin plankton based on date of collection.
angles indicate surface samples; solid figures indicate samples from 50 meters.