condition	mean	min	max
0 h after light	6.7023	6.54995	6.85465
4 h after light	6.881205	6.16913	7.59328
8 h after light	8.537285	8.45095	8.62362
4 h after dark	9.73859	9.25238	10.2248
8 h after dark	8.425795	7.26173	9.58986
12 h after dark	5.70937	5.54657	5.87217