condition	mean	min	max
4 h after light	9.12522	8.936160000000001	9.352839999999999
8 h after light	8.898343333333333	8.69796	9.19181
12 h after light	8.868086666666667	8.693589999999999	9.048739999999999
4 h after dark	9.22138	9.0632	9.51383
8 h after dark	9.2551	9.082419999999999	9.49126
12 h after dark	9.415266666666666	9.157919999999999	9.81569