condition	mean	min	max
4 h after light	8.840472	8.284178	9.396766
8 h after light	9.178126500000001	8.948263	9.40799
12 h after light	8.7232845	8.229843	9.216726
4 h after dark	8.0485995	7.468518	8.628681
8 h after dark	8.887288	8.381796	9.39278
12 h after dark	8.0192	8.0192	8.0192