condition	mean	min	max
0 h after light	15.2312	14.0501	16.4123
4 h after light	9.273085	9.12054	9.42563
8 h after light	2.982125	2.12631	3.83794
4 h after dark	7.052825	4.39607	9.70958
8 h after dark	11.221115000000001	9.69843	12.7438
12 h after dark	16.80445	16.3247	17.2842