. 2012 Feb 2;117:80–95. doi: 10.6028/jres.117.003

Table 5.

Reported NIST SIR equivalent activity, A_e, corrected value, A_e′, and relative difference, D. For each radionuclide, PIC “A” was calibrated at time t₁ and used for the SIR submission at t₂.

Nuclide	t₁	t₂	A_e (MBq)	$u_{A_{e}} (%)$	A_e′ (MBq)	$u_{A_{e^{'}}}$ (%)	D (%)	u_D (%)
²⁰³Hg	1976	1985	68.00	0.35	67.65	0.46	0.40	0.28
⁹⁹Mo	1978	1998	64.69	0.24	64.13	0.36	0.80	0.29
¹¹¹In	1977	1998	43.45	0.12	43.00	0.23	0.93	0.31
¹³¹I	1979	1998	40.50	0.14	40.23	0.21	0.62	0.26
⁵¹Cr	1981	1999	0.4893	0.00	0.4863	0.00	0.61	0.28
¹³⁷Cs	1982	2001	27.63	0.10	27.54	0.10	0.36	0.12
⁸⁵Sr	1977	2001	30.09	0.09	29.88	0.13	0.61	0.21
⁵⁹Fe	1979	2001	14.64	0.06	14.61	0.06	0.19	0.12
⁵⁴Mn	1979	2002	19.27	0.05	19.20	0.07	0.33	0.15
⁸⁸Y	1980	2002	6.913	0.02	6.904	0.02	0.13	0.11
¹³³Xe	1992	2001	896.10	3.70	889.59	4.49	0.73	0.28
¹³⁹Ce	1987	1997	0.1344	0.00	0.1337	0.00	0.54	0.20
¹⁵³Gd	1989	1998	369.4	2.50	366.5	2.77	0.79	0.32