Table 4.

Ratios of activity of i-th radionuclide in ground deposition to that of ¹³⁷Cs, R_i/Cs137, at the time of deposition (Minenko et al. 2006)

Radionuclide	Region
	1a	2b	3c	4d	5e	6f
	0.5 g	1.8	1.8	2.8	2.4	2.4
95Zr	2.4	3.6	0.17	1.3	4.0	0.34
95Nb	2.4	3.6	0.17	1.3	4	0.34
99Mo	9.3	7.7	2.0	4.4	4.4	2.4
103Ru	3.3	3.7	1.6	2.8	2.4	1.9
106Ru	0.71	0.93	0.42	1.0	0.85	0.34
132Te	10	8	11	2.6	4.2	4.2
131I	13	16	8.3	17	21	21
132I	10	8	11	2.6	4.2	4.2
133I	14	7.5	3.4	3.4	5	5
135I	5.2	1	0.12	0.017	0.13	0.13
134Cs	0.5	0.5	0.5	0.5	0.5	0.5
136Cs	0.3	0.27	0.27	0.26	0.26	0.26
137Cs	1	1	1	1	1	1
140Ba	5	4.7	0.76	6.0	7.6	1.3
140La	5	4.7	0.76	6.0	7.6	1.3
141Ce	3.1	3.9	0.14	2.4	3.8	0.33
144Ce	2	2.8	0.12	1.1	3	0.27
239Np	3	4	0.2	2.4	4	0.3

^aChernobyl 30 km zone

^bBragin, Khoiniki, Elsk, Kalinkovichi, Lelchitsy, Loev Mozyr, Narovlya, and Rechitsa raions

^cGomel-Mogilev caesium spot (see Fig. 1): Buda-Koshelevo, Chechersk, Dobrush, Korma, and Vetka raions in Gomel Oblast and Bykhov, Klimovichi, Kostyukovichi, Krasnopolie, Slavgorod, and Cherikov raions in Mogilev Oblast

^dGomel-City

^eThe remainder of Gomel and Mogilev Oblasts (except for Mogilev-City)

^fMogilev-City

^gTime of main deposition in given zone, given in days after the accident