condition	mean	min	max
4 h after light	7.374615	6.17383	8.5754
8 h after light	6.7323	6.54629	6.91831
12 h after light	7.844355	7.69093	7.99778
4 h after dark	9.826033333333333	9.2051	10.648
8 h after dark	10.39483	9.40989	11.1774
12 h after dark	7.87508	6.78008	8.5496