condition	mean	min	max
4 h after light	8.137988	7.903088	8.372888
8 h after light	7.789823	7.060212	8.519434
12 h after light	7.671887	7.671887	7.671887
4 h after dark	7.832858	7.445961	8.219755
8 h after dark	7.4313395	7.362031	7.500648
12 h after dark	7.180113	7.180113	7.180113