Table 6a.

Correction factors for measurements made with the original WAFAC, assuming a source-to-aperture distance of 30 cm

Correction factor		For:	Currently implemented values		Values from the analyses presented in the text
			125I	103Pd	125I	125I + 0.053 Ag Kx	125I + 0.094 Ag Kx	125I 0.195 Ag Kx	125I + 0.181 Pd Kx	103Pd
1	kdecay	Correction to reference date, T1/2(d)	59.43	16.991	59.40	59.40	59.40	59.40	59.40	16.991
2	ksat	Recombination inside WAFAC	<1.004	<1.004	<1.004	<1.004	<1.004	<1.004	<1.004	<1.004
3	kfoil	Attenuation in filter	1.0295	1.0738	1.0320	1.0342	1.0358	1.0394	1.0417	1.0776
4	katt-WAFAC	Aperture-to-WAFAC air attenuation	1.0042	1.0079	1.0051	1.0053	1.0054	1.0058	1.0060	1.0094
5	katt-SA	Source-to-aperture air attenuation	1.0125	1.0240	1.0143	1.0149	1.0153	1.0163	1.0170	1.0267
6	kinvsq	Inverse-square correction for aperture	1.0089	1.0089	1.0089	1.0089	1.0089	1.0089	1.0089	1.0089
7	khumidity	Humidity correction	0.9982	0.9981	0.9979	0.9979	0.9979	0.9979	0.9979	0.9979
8	kint-scatt	In-chamber photon-scatter correction	0.9966	0.9962	0.9968	0.9968	0.9968	0.9967	0.9967	0.9964
9	kstem	Source-holder stem-scatter correction	0.9985	0.9985	0.9985	0.9985	0.9985	0.9985	0.9985	0.9985
10	kelec	In-chamber electron-loss correction	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0
11	kpen	Aperture penetration	0.9999	0.9999	0.9999	0.9999	0.9999	0.9999	0.9999	0.9997
12	kext-scatt	External photon-scatter correction	1.0	1.0	0.9947	0.9947	0.9947	0.9947	0.9947	0.9945
	Π k3-12		1.0489	1.1100	1.0486	1.0516	1.0538	1.0587	1.0621	1.1121
		Percent change			−0.03	+0.26	+0.47	+0.93	+1.26	+0.19