condition	mean	min	max
4 h after light	8.671833333333334	8.54866	8.753589999999999
8 h after light	8.518033333333333	8.49167	8.56838
12 h after light	8.757203333333333	8.62593	8.83735
4 h after dark	8.96498	8.873330000000001	9.01192
8 h after dark	9.044609999999999	8.93062	9.122119999999999
12 h after dark	8.93144	8.857569999999999	9.02714