condition	mean	min	max
4 h after light	6.5898900000000005	4.36447	8.81531
8 h after light	6.63688	6.19346	7.0803
12 h after light	13.52615	11.8271	15.2252
4 h after dark	16.11	15.1137	17.4755
8 h after dark	17.126366666666666	15.5282	18.1745
12 h after dark	9.371686666666667	7.73211	10.5281