condition	mean	min	max
0 h after light	9.596070000000001	9.41555	9.77659
4 h after light	9.466695000000001	9.24361	9.68978
8 h after light	8.21219	7.81936	8.60502
4 h after dark	8.592965	6.68233	10.5036
8 h after dark	8.15726	7.98709	8.32743
12 h after dark	11.368504999999999	8.39241	14.3446