Table 1.

Estimated illuminant by each observer judged from the chromaticity at which luminosity thresholds peaked.

		3000 K	6500 K	20,000 K
Natural	K.K.	3000	5500	10,500
	K.S.	3000	7000	8500
	N.T.	3000	5000	10,500
	Y.K.	3000	5500	12,000
Reverse	K.K.	3000	6500	7500
	K.S.	4000	7000	7500
	N.T.	3000	5500	12,000
	Y.K.	3500	5000	10,500
Flat	K.K.	3000	7000	8500
	K.S.	3000	5000	8500
	N.T.	3000	5500	12,000
	Y.K.	3000	6500	12,000

The top row shows the color temperatures of ground-truth illuminants, and the other numbers indicate the color temperature of estimated illuminants.