condition	mean	min	max
4 h after light	8.02772	7.63382	8.3611
8 h after light	8.48033	8.086260000000001	8.830869999999999
12 h after light	8.140563333333333	7.759760000000001	8.41436
4 h after dark	8.25703	7.88625	8.514669999999999
8 h after dark	8.646663333333334	8.33982	8.811060000000001
12 h after dark	9.000503333333334	8.39	9.382