Table 5.2.

Relative standard uncertainties from all components during responsivity measurements at selected wavelengths

Component	Wavelength (nm)	AES	Relative standard uncertainty (%)
			EPA	SERC	USDA	USDA
Lamp
Irradiance	290	0.92	0.92	0.92
	320	0.90	0.90	0.90	0.90	0.90
	350	0.71	0.71		0.71	0.71
Size		0.09	0.09	0.03	0.01	0.01
Goniometry		0.46	0.46	0.27	0.11	0.11
Current (random)	290	0.06	0.06	0.06
	320	0.05	0.05	0.05	0.05	0.05
	350	0.05	0.05		0.05	0.05
Current (systematic)	290	0.11	0.11	0.11
	320	0.10	0.10	0.10	0.10	0.10
	350	0.09	0.09		0.09	0.09
Alignment		0.39	0.39	0.39	0.73	0.73
Instrument
Wavelength	290	0.25	0.24	0.21
	320	0.04	0.04	0.16	0.16	0.16
	350	0.05	0.03		0.12	0.12
Signal	290	0.94	0.08	0.23
	320	0.35	0.53	0.46	0.96	0.60
	350	0.18	0.07		0.85	0.41
Combined
Random	290	0.94	0.10	0.24
	320	0.35	0.53	0.46	0.96	0.60
	350	0.19	0.09		0.85	0.41
Systematic	290	1.14	1.13	1.06		1.19
	320	1.09	1.09	1.07	1.18	1.18
	350	0.94	0.94		1.04	1.04