condition	mean	min	max
4 h after light	8.182216666666667	7.9059800000000005	8.38766
8 h after light	7.904833333333333	7.593380000000001	8.21284
12 h after light	8.172896666666666	7.90433	8.417530000000001
4 h after dark	8.19782	8.00843	8.5745
8 h after dark	8.173336666666666	7.902889999999999	8.42943
12 h after dark	8.2501	8.0116	8.5031