condition	mean	min	max
4 h after light	5.94698	4.88328	7.01068
8 h after light	8.2991	7.75839	8.83981
12 h after light	10.7518	10.2908	11.2128
4 h after dark	9.075725	8.55443	9.59702
8 h after dark	6.43211	6.14323	6.72099
12 h after dark	7.019635	6.93377	7.1055