condition	mean	min	max
0 h after light	7.919485	7.58643	8.25254
4 h after light	2.493795	1.72303	3.26456
8 h after light	2.670645	2.07544	3.26585
4 h after dark	6.30934	4.48161	8.13707
8 h after dark	5.99883	5.39986	6.5978
12 h after dark	6.25371	4.36293	8.14449