Table 3. First-year municipality-average doses estimated by UNSCEAR and the present study, together with R_i and K_i values.

Region	Municipality	Number of respondents	R i	K i	Municipality-average dose (mSv)			Ratio
					4-month dose	1-y dose (this study)	1-y dose (UNSCEAR)
Kempoku	Fukushima	78,379	0.355	0.817	1.37	2.49	3.02	0.82
	Nihonmatsu	13,605	0.945	0.979	1.64	3.25	2.44	1.33
	Datea	14,774	0.463	0.927	1.25	2.42	1.95	1.24
	Motomiyaa	7,493	0.581	0.927	1.51	2.91	1.52	1.91
	Kori	3,136	0.515	1.016	1.32	2.66	2.65	1.00
	Kunimi	2,415	0.662	0.851	1.03	1.90	1.14	1.67
	Kawamata	3,664	0.668	1.055	1.24	2.54	1.23	2.07
	Otama	1,602	0.724	0.843	1.27	2.34	2.11	1.11
Kenchu	Koriyama	73,110	0.389	0.821	1.25	2.28	2.01	1.14
	Sukagawab	14,422	0.234	0.929	0.71	1.36	1	1.36
	Tamura	8,395	1.193	0.940	0.44	0.85	0.52	1.63
	Kagamiishi	2,445	0.851	0.897	0.46	0.88	0.74	1.19
	Tenei	1,052	0.503	0.955	1.16	2.27	1.39	1.63
	Ishikawa	3,237	1.361	0.815	0.26	0.47	0.15	3.12
	Tamakawa	1,205	1.009	1.012	0.28	0.57	0.2	2.84
	Hirata	1,335	1.161	1.115	0.31	0.67	0.28	2.38
	Asakawa	1,247	0.937	1.014	0.28	0.57	0.3	1.91
	Furudono	1,089	1.057	1.089	0.31	0.65	0.28	2.31
	Miharu	3,970	0.976	0.986	0.71	1.41	1.1	1.28
	Ono	2,111	1.510	0.791	0.31	0.55	0.29	1.89
Kennan	Shirakawa	13,774	0.555	1.026	0.67	1.35	0.98	1.38
	Nishigo	4,287	0.607	1.163	0.89	1.93	1.15	1.68
	Izumizaki	1,185	0.334	1.161	0.42	0.90	0.75	1.20
	Nakajima	857	0.991	1.021	0.36	0.72	0.32	2.26
	Yabuki	3,460	0.587	1.028	0.41	0.83	0.43	1.92
	Tanagura	2,586	0.575	0.898	0.38	0.73	0.58	1.25
	Yamatsuri	1,165	0.953	0.991	0.12	0.23	0.08	2.92
	Hanawa	1,892	0.605	1.122	0.23	0.49	0.25	1.97
	Samegawa	664	1.104	0.975	0.31	0.62	0.29	2.13
Aizu	Aizuwakamatsu	23,944	0.680	1.048	0.23	0.46	0.33	1.40
	Kitakata	9,000	1.331	1.027	0.26	0.52	0.33	1.58
	Kitashiobara	483	1.294	0.952	0.40	0.78	0.64	1.22
	Nishiaizu	1,018	1.144	0.535	0.09	0.14	0.07	2.02
	Bandai	666	0.814	0.995	0.29	0.57	0.27	2.12
	Inawashiro	2,895	1.024	1.094	0.24	0.51	0.32	1.59
	Aizubange	2,664	0.954	0.925	0.30	0.58	0.52	1.11
	Yugawa	601	0.749	0.705	0.35	0.60	0.49	1.23
	Yanaizu	559	0.913	0.860	0.22	0.41	0.17	2.39
	Mishima	247	1.300	0.971	0.19	0.37	0.17	2.19
	Kaneyama	409	1.242	0.989	0.14	0.28	0.03	9.36
	Syowa	246	1.010	0.884	0.17	0.32	0.16	2.01
	Aizumisato	3,659	1.216	0.895	0.25	0.48	0.19	2.53
Minamiaizu	Shimogo	974	1.249	0.977	0.08	0.17	0.04	4.13
	Hinoemata	103	1.565	0.713	0.08	0.14	0.03	4.52
	Tadami	887	2.121	0.569	0.13	0.21	0.14	1.48
	Minamiaizu	3,052	0.981	1.720	0.11	0.30	0.07	4.23
Soso	Soma	10,610	0.612	0.556	0.58	0.90	0.69	1.30
	Shinchi	2,200	0.817	0.845	0.45	0.83	0.7	1.19
Iwaki	Iwaki	74,139	0.495	0.646	0.33	0.54	0.78	0.69
Total		466,368	—	—	—	—	—	—

^aSV measurements for these city offices started in March 2011, but stopped in the middle of June. The available data were extrapolated to the 4-month dose using data from Fukushima MP of Kempoku region where these cities are located. Then, values of R_i were estimated.

^bSV measurements for Sukagawa City Office started in March 2011 but stopped at the beginning of September. Those for a branch office of Sukagawa City started in July and continued until March 2012. The first 4-month ambient dose equivalent at the branch office was estimated using (1) that estimated for the City Office and (2) a ratio deduced from a comparison between data on both sites in July and August 2011. Then, K_i and R_i values were estimated.