condition	mean	min	max
4 h after light	7.545576666666666	7.40619	7.7164399999999995
8 h after light	7.23981	7.12435	7.43503
12 h after light	7.41984	7.335189999999999	7.49998
4 h after dark	7.31464	7.12595	7.55705
8 h after dark	7.43512	7.29063	7.71207
12 h after dark	7.38559	7.25977	7.45477