condition	mean	min	max
4 h after light	8.4647505	7.59458	9.334921
8 h after light	7.9365895	7.6337	8.239479
12 h after light	7.639692500000001	7.476199	7.803186
4 h after dark	7.4959705	7.345799	7.646142
8 h after dark	7.22073	6.965261	7.476199
12 h after dark	7.646142	7.646142	7.646142