Table 3.

Results for subjective measures (sleepiness, mood, evaluation of lighting conditions).

	2700 K		6500 K		Statistics
	100 lx	1000 lx	100 lx	1000 lx	CCT			Illuminance			CCT*illuminance			R2
	EMM (SE)	EMM (SE)	EMM (SE)	EMM (SE)	F	df	p	F	df	p	F	df	p
Sleepiness	4.18 (0.36)	4.06 (0.36)	4.21 (0.36)	4.4 (0.38)	0.19	(1,49)	0.67	0.01	(1,49)	0.91	0.31	(1,48)	0.58	0.07
Happiness	3.07 (0.14)	3.2 (0.14)	3.19 (0.14)	3.11 (0.14)	0.004	(1,48)	0.95	0.04	(1,48)	0.85	0.97	(1,47)	0.33	0.17
Sadness	2.37 (0.20)	2.12 (0.20)	2.45 (0.20)	2.67 (0.21)	1.69	(1,47)	0.20	0.01	(1,46)	0.91	2.37	(1,45)	0.13	0.06
Pleasantness	3.41 (0.19)	3.09 (0.19)	3.69 (0.19)	3.27 (0.20)	1.28	(1,48)	0.26	4.00	(1,49)	0.05	0.07	(1,48)	0.79	0.07
Comfort	3.29 (0.23)	3.06 (0.23)	3.52 (0.23)	3.13 (0.24)	0.34	(1,50)	0.57	2.45	(1,49)	0.12	0.16	(1,49)	0.69	0.10
Disturb	3.61 (0.21)	3.39 (0.21)	3.51 (0.21)	3.25 (0.22)	0.27	(1,50)	0.61	1.34	(1,50)	0.25	0.01	(1,49)	0.93	0.04
Warmth	3.63 (0.20)	3.73 (0.20)	2.98 (0.20)	2.82 (0.21)	13.52	(1,50)	0.001	0.02	(1,49)	0.88	0.45	(1,48)	0.50	− 0.09
Preference	3.09 (0.19)	2.79 (0.19)	3.01 (0.19)	3.02 (0.20)	0.14	(1,50)	0.71	0.59	(1,50)	0.45	0.67	(1,49)	0.42	0.02
Brightness	2.62 (0.21)	3.64 (0.21)	3.03 (0.21)	4.43 (0.22)	7.36	(1,49)	0.009	32.12	(1,48)	0.00	0.80	(1,48)	0.38	0.26
Excitement	2.35 (0.22)	3.23 (0.22)	2.74 (0.22)	3.67 (0.23)	3.34	(1,95)	0.07	17.11	(1,95)	0.00	0.01	(1,95)	0.93	0.18
Effect on work	3.02 (0.17)	2.83 (0.17)	3.29 (0.17)	3.16 (0.18)	2.38	(1,50)	0.13	1.15	(1,50)	0.29	0.03	(1,49)	0.86	0.01
Effect on mood	3.25 (0.14)	3.21 (0.14)	3.19 (0.14)	3.1 (0.15)	0.31	(1,48)	0.58	0.27	(1,48)	0.61	0.03	(1,47)	0.87	− 0.09

EMM estimated marginal means, SE standard errors.

A significant difference is indicated by bold labels.