condition	mean	min	max
4 h after light	8.052479	7.946936	8.158022
8 h after light	7.757216	7.671887	7.842545
12 h after light	7.046723	6.937451	7.155995
4 h after dark	7.665266	7.646142	7.68439
8 h after dark	7.671887	7.671887	7.671887
12 h after dark	8.002752	8.002752	8.002752