Table 4 Activity concentrations (Bq kg⁻¹-fresh weight) of accident-derived radionuclides in fish under food restriction considerations⁵⁰

		Phase	I			II			III			IV			V			VI
Seafood group	Radionuclide	Area	GM^c	GSD^d	n^e	GM	GSD	n	GM	GSD	n	GM	GSD	n	GM	GSD	n	GM	GSD	n
Fish	⁹⁰Sr	FAO 61^a	0.01	4.27	(243)	0.01	1.03	(22)	0.01	1.15	(23)	0.01	1.21	(34)	0.01	1.49	(61)	0.00	1.30	(281)
		Others^b	0.01	4.27	(243)	0.01	4.27	(243)	0.01	4.27	(243)	0.01	4.27	(243)	0.01	4.27	(243)	0.01	4.27	(243)
	^110mAg	FAO 61	0.01^f	1.82	(98)	0.00	2.48	(346)	0.00	2.48	(346)	0.00	2.48	(346)	0.00	2.48	(346)	0.00	2.48	(346)
		Others	0.01^f	1.82	(98)	0.00	2.48	(346)	0.00	2.48	(346)	0.00	2.48	(346)	0.00	2.48	(346)	0.00	2.48	(346)
	¹³¹I	FAO 61	–^g	–	(0)	5.16	2.12	(27)	0.08	1.42	(76)	–	–	(0)	–	–	(0)	–	–	(0)
		Others	–	–	(0)	–	–	(0)	–	–	(0)	–	–	(0)	–	–	(0)	–	–	(0)
	¹³⁴Cs	FAO 61	0.01^f	2.43	(210)	0.37	2.43	(133)	0.42	2.61	(135)	0.38	2.62	(1440)	0.36	1.96	(11144)	0.06	1.72	(16669)
		Others	0.01^f	2.43	(210)	0.01	9.02	(413)	0.01	9.02	(413)	0.01	9.02	(413)	0.01	9.02	(413)	0.01	9.02	(413)
	¹³⁷Cs	FAO 61	0.13	1.20	(2182)	0.25	2.80	(143)	0.45	2.73	(153)	0.46	2.65	(1489)	0.59	1.91	(11534)	0.19	1.91	(16684)
		Others	0.13	1.20	(2182)	0.43	1.15	(1066)	0.43	1.15	(1066)	0.43	1.15	(1066)	0.43	1.15	(1066)	0.43	1.15	(1066)
	^239,240Pu	FAO 61	0.00^h	7.14	(87)	0.00	7.14	(87)	0.00	3.46	(22)	0.00	7.14	(87)	0.00	1.24	(5)	0.00	1.10	(97)
		Others	0.00	7.14	(87)	0.00	7.14	(87)	0.00	7.14	(87)	0.00	7.14	(87)	0.00	7.14	(87)	0.00	7.14	(87)

^aFAO 61: “Pacific, Northwest” fishing area defined by the FAO⁵⁴.
^bOthers: All fishing areas except FAO 61 “Pacific, Northwest”.
^cGM: geometric mean (Bq kg⁻¹-fresh weight).
^dGSD: geometric standard deviation.
^en: number of records.
^fValues are reported here based on the approach for handling minimum detectable activity values described in “Assumptions for values not detected” in Supplementary Methods.
^g-: No data.
^h0.00 indicates values <0.005. Full values are shown in “Supplementary Data 2”.
The average activity concentrations of accident-derived radionuclides in seafood were weighted by seafood production and import amounts in the six subareas shown in Fig. S4. Data exceeding regulation values were excluded.
See “Radionuclide concentrations in seafood” in Methods for area descriptions. The values in this table are summary statistics derived from measured data reported in multiple references available in MARIS.

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