condition	mean	min	max
4 h after light	8.016826666666667	7.87988	8.10432
8 h after light	8.121983333333333	7.8631899999999995	8.26845
12 h after light	8.315026666666666	8.21025	8.4042
4 h after dark	8.231343333333333	8.132019999999999	8.28632
8 h after dark	8.039480000000001	7.899380000000001	8.2298
12 h after dark	7.97105	7.8579	8.06738