condition	mean	min	max
4 h after light	7.251530000000001	6.70378	7.79928
8 h after light	6.45346	6.37179	6.53513
12 h after light	7.13621	6.97431	7.29811
4 h after dark	8.73873	8.20867	9.26879
8 h after dark	7.442385	7.33639	7.54838
12 h after dark	8.175245	8.12332	8.22717