condition	mean	min	max
4 h after light	6.05893	5.9985800000000005	6.1727300000000005
8 h after light	6.0961300000000005	5.9611	6.31364
12 h after light	5.935816666666667	5.812880000000001	6.1269599999999995
4 h after dark	6.01448	5.97614	6.07681
8 h after dark	5.89981	5.53225	6.1229
12 h after dark	5.987736666666667	5.9305	6.0865599999999995