condition	mean	min	max
4 h after light	7.851586666666667	7.71886	7.9227300000000005
8 h after light	7.859566666666666	7.636539999999999	8.12384
12 h after light	7.705326666666667	7.5000800000000005	7.909210000000001
4 h after dark	7.44115	7.301830000000001	7.705019999999999
8 h after dark	7.56219	7.4161600000000005	7.7421
12 h after dark	7.512676666666667	7.4200800000000005	7.594060000000001