condition	mean	min	max
4 h after light	8.294946666666666	8.25079	8.3519
8 h after light	8.303496666666666	8.21797	8.39682
12 h after light	8.12827	8.05975	8.19613
4 h after dark	8.309949999999999	8.21879	8.45647
8 h after dark	8.43941	8.2888	8.52469
12 h after dark	8.578716666666667	8.37266	8.76304