Table 1. Explanation of variables used in the present paper.

Measurement devices			Not applicable (Estimation by calculation)	Stationary-type monitoring posts	Portable-type monitoring posts	Survey meters	Personal dosimeters
Estimated types of dose			Effective dose	Absorbed dose rate in air	Ambient dose equivalent	Ambient dose equivalent	Personal dose	No. of Equation where variables used
Basic symbol			D	D′′	$D^{\ast }$	$D^{\ast }$	Dp
	Place of interest	Period for dose estimation
Measured dose including background	ith municipality	t p	—	—	$D_{Mi}^{\ast }(t_p)$	$D_{Mi}^{\ast }(t_p)$	$D_{Mi}^p(t_p)$	(9), (10)
		T	—	—	—	$D_{Mi}^{\ast }(T)$	—	(6), (7)
	Rth region	T	—	$D_{MR}^{″}(T)$	$D_{MR}^{\ast }(T)$	—	—	(6), (7)
		First 4 months	—	$D_{MR}^{″}(4m)$	$D_{MR}^{\ast }(4m)$	—	—	(6), (7)
Additional dose due to the accident	ith municipality	t	Di(t)	$D_i^{″}(t)$	$D_i^{\ast }(t)$	$D_i^{\ast }(t)$	—	(3), (5)
		T		—	—	$D_i^{\ast }(T)$		(6), (7)
		t p	Di(tp)	—	$D_i^{\ast }(t_p)$	$D_i^{\ast }(t_p)$	$D_i^p(t_p)$	(8), (9)
		First 4 months	Di(4m)	$D_i^{″}(4m)$	$D_i^{\ast }(4m)$	$D_i^{\ast }(4m)$	—	(4), (6), (7)
		Subsequent 8 months	—	$D_i^{″}(8m)$	$D_i^{\ast }(8m)$	$D_i^{\ast }(8m)$	—	(4)
		First year	Di(1y)	$D_i^{″}(1y)$	$D_i^{\ast }(1y)$	$D_i^{\ast }(1y)$	—	(4)
	Rth region	T	—	$D_R^{″}(T)$	$D_R^{\ast }(T)$	—	—	(6), (7)
		First 4 months	—	$D_R^{″}(4m)$	$D_R^{\ast }(4m)$	—	—	(6), (7)
Background dose due to terrestrial radiation	ith municipality	T	—	—	$D_{Bi}^{\ast }(T)$	$D_{Bi}^{\ast }(T)$	—	(6), (7)
		t p	DBi(tp)	—	$D_{Bi}^{\ast }(t_p)$	$D_{Bi}^{\ast }(t_p)$	$D_{Bi}^p(t_p)$	(9), (10)
	Rth region	T	—	$D_{BR}^{″}(T)$	$D_{BR}^{\ast }(T)$	—	—	(6)
		First 4 months	—	$D_{BR}^{″}(4m)$	$D_{BR}^{\ast }(4m)$	—	—	(6)
Background dose due to cosmic rays	all municipalities	t p	DUB(tp)	No sensitivity	No sensitivity	No sensitivity	$D_{Bi}^p(t_p)$	(9), (10)