Estimates of average (geometric means: GM) time-integrated concentrations of I-131 (nCi d/L) and associated uncertainties (geometric standard deviations: GSD) in all categories of cows milk considered for MONTGOMERY County, PA

Test	Fresh from cow		Consumed on the farm (category 1)		Retailed from farm (category 2)		Originating from the same region (category 3)		Originating from another region (category 4)		Volume weighted average		Maximum		Backyard cow
	GM	GSD	GM	GSD	GM	GSD	GM	GSD	GM	GSD	GM	GSD	GM	GSD	GM	GSD
ra	8.3E-2	12.3	7.6E-2	12.3	7.0E-2	12.3	8.2E-2	12.3	3.0E-1	12.3	7.2E-2	12.3	3.0E-1	12.3	1.5E-2	9.1
bj	3.1E+1	3.8	2.8E+1	3.8	2.7E+1	3.8	1.8E+1	3.7	3.5E+1	3.7	2.6E+1	4.0	4.0E+1	3.8	1.3E+2	3.4
ts	1.9E+2	2.6	1.7E+2	2.6	1.6E+2	2.6	1.7E+2	2.4	1.5E+2	2.2	1.6E+2	2.6	2.1E+2	2.4	1.8E+2	2.3
uk	1.7E+2	4.1	1.6E+2	4.1	1.4E+2	4.1	1.4E+2	4.0	1.2E+2	3.7	1.5E+2	4.0	1.8E+2	3.9	1.9E+2	3.5
tp	5.7E+1	2.5	5.2E+1	2.5	4.8E+1	2.5	5.1E+1	2.5	7.5E+1	2.1	4.8E+1	2.5	7.9E+1	2.2	8.4E+1	2.1
pb	1.3E+2	3.6	1.2E+2	3.6	1.1E+2	3.6	1.1E+2	3.5	1.4E+2	3.4	1.1E+2	3.7	1.6E+2	3.4	2.8E+2	3.7
ht	0.0E+0	0.0	0.0E+0	0.0	0.0E+0	0.0	0.0E+0	0.0	0.0E+0	0.0	0.0E+0	0.0	0.0E+0	0.0	0.0E+0	0.0
ue	1.4E+0	10.4	1.2E+0	10.4	1.1E+0	10.4	2.1E+0	8.8	2.4E+0	8.4	1.3E+0	10.1	3.3E+0	8.3	2.9E+0	9.6

These data were produced as part of the National Cancer Institute study: Estimated Exposures and Thyroid Doses to the American People from Iodine-131 in Fallout from Nevada Atmospheric Nuclear Bomb Tests.