condition	mean	min	max
4 h after light	6.994936666666667	6.59377	7.25017
8 h after light	7.108046666666667	7.00303	7.2070300000000005
12 h after light	7.37199	7.206510000000001	7.49643
4 h after dark	7.129533333333334	7.0174	7.283060000000001
8 h after dark	6.98893	6.8865	7.04575
12 h after dark	6.9877400000000005	6.82242	7.155760000000001