condition	mean	min	max
4 h after light	13.60254	6.89658	20.3085
8 h after light	15.65325	13.9597	17.3468
12 h after light	18.694	17.8477	19.5403
4 h after dark	23.0441	19.1638	27.9958
8 h after dark	20.247966666666667	13.1247	24.305
12 h after dark	15.925300000000002	14.1704	17.472