condition	mean	min	max
4 h after light	8.853806666666667	8.753810000000001	9.03678
8 h after light	8.244430000000001	8.01091	8.388010000000001
12 h after light	8.582576666666666	8.22851	9.05648
4 h after dark	8.500836666666666	8.324639999999999	8.64489
8 h after dark	8.696110000000001	8.60021	8.76505
12 h after dark	9.224873333333333	9.12461	9.32896