condition	mean	min	max
4 h after light	8.240764	7.845228	8.6363
8 h after light	8.9684665	8.641363	9.29557
12 h after light	8.362391500000001	8.216267	8.508516
4 h after dark	8.985516	8.830281	9.140751
8 h after dark	8.6373115	8.605562	8.669061
12 h after dark	8.605562	8.605562	8.605562