condition	mean	min	max
4 h after light	7.859376666666667	7.78896	7.99171
8 h after light	7.350083333333333	7.2491699999999994	7.529610000000001
12 h after light	7.34948	7.243989999999999	7.41724
4 h after dark	7.735616666666666	7.4188	7.920889999999999
8 h after dark	8.17459	7.954460000000001	8.40527
12 h after dark	8.682166666666667	8.52533	8.81374