Johnston Journal of Nuclear Energy Volume 19, Issue 7,  pp 527-539, 1965 Table 2
239Pu sample 3
TIME	BETA	ERR	GAMMA	ERR	TOTAL	ERR
(DAYS)	MICROWATTS	PERCENT	MICROWATTS	PERCENT	MICROWATTS	PERCENT
54	241	10	250	18	491	15
62	217	9	212	15	429	13
75	188	8	170	12	358	11
97	153	6	128	9	281	8
125	131	5	100	7	231	7