condition	mean	min	max
4 h after light	8.19262	8.11642	8.25473
8 h after light	8.460513333333333	8.36341	8.5674
12 h after light	8.316533333333332	8.21105	8.42738
4 h after dark	8.1785	8.081489999999999	8.23709
8 h after dark	8.19022	7.988580000000001	8.37373
12 h after dark	7.894016666666667	7.7046	8.04119