Table 6.

Estimates of bone-marrow doses for subjects of Ukrainian-American study of liquidators.

First year of work	Number of subjects	Average (mGy) of estimated		Uncertainty, average GSD	Range of estimated mean doses (mGy)
		Mean doses	geometric mean doses
1986	408	100	77	1.9	0.009–3300
1987	88	55	34	2.2	0.00004–340
Total 1986–1987	496	95	70	1.9	0.00004–3300
1988	50	27	17	2.4	0.13–140
1989	21	42	25	2.2	0.23–240
1990	5	34	16	2.5	0.04–120
All years	572	87	63	2.0	0.00004–3300