condition	mean	min	max
4 h after light	8.39879	8.28792	8.46867
8 h after light	8.4433	8.35947	8.49164
12 h after light	8.275206666666667	8.2137	8.37597
4 h after dark	8.362723333333333	8.1625	8.47682
8 h after dark	8.57301	8.3933	8.72977
12 h after dark	8.819293333333333	8.66439	8.958689999999999