condition	mean	min	max
4 h after light	5.32329	4.22885	6.28514
8 h after light	4.319453333333333	1.58855	6.79165
12 h after light	7.6769799999999995	5.12116	9.52019
4 h after dark	12.708933333333333	12.5315	12.9287
8 h after dark	13.657596666666667	9.70029	17.8573
12 h after dark	12.01901	9.45873	13.887