condition	mean	min	max
4 h after light	7.8848115	7.580447	8.189176
8 h after light	7.1185735	6.707379	7.529768
12 h after light	7.2652905	7.000813	7.529768
4 h after dark	7.2293295	7.100146	7.358513
8 h after dark	9.490408	9.205716	9.7751
12 h after dark	6.868632	6.868632	6.868632