condition	mean	min	max
4 h after light	6.240853333333333	6.16849	6.3411
8 h after light	6.193016666666666	5.98727	6.37726
12 h after light	6.2414	6.21163	6.2786599999999995
4 h after dark	6.2653533333333336	6.24043	6.30063
8 h after dark	6.14543	5.9410099999999995	6.3095
12 h after dark	6.201243333333333	5.97967	6.44865