condition	mean	min	max
4 h after light	6.48902	6.34319	6.56712
8 h after light	6.49944	6.20944	6.774489999999999
12 h after light	6.476163333333334	6.28389	6.682910000000001
4 h after dark	6.65524	6.56837	6.8221
8 h after dark	6.492363333333333	6.177569999999999	6.7788699999999995
12 h after dark	6.8076333333333325	6.61119	7.005789999999999