condition	mean	min	max
4 h after light	7.52868	7.35054	7.6947
8 h after light	7.436993333333334	7.3596	7.5599300000000005
12 h after light	7.257196666666667	7.150530000000001	7.32505
4 h after dark	7.52071	7.472180000000001	7.563110000000001
8 h after dark	7.595346666666667	7.567410000000001	7.6485
12 h after dark	7.554553333333334	7.5073	7.6436