condition	mean	min	max
0 h after light	6.220415	5.88502	6.55581
4 h after light	9.90245	8.8195	10.9854
8 h after light	9.051715000000002	8.71019	9.39324
4 h after dark	6.7433499999999995	5.54864	7.93806
8 h after dark	7.61342	7.51163	7.71521
12 h after dark	8.284515	7.5888	8.98023