condition	mean	min	max
4 h after light	6.503629999999999	5.38554	7.62172
8 h after light	6.761565	6.59952	6.92361
12 h after light	8.429245	7.83124	9.02725
4 h after dark	11.58165	11.1115	12.0518
8 h after dark	9.93275	9.92204	9.94346
12 h after dark	9.794329999999999	8.96806	10.6206