condition	mean	min	max
4 h after light	3.27783	2.93706	3.6186
8 h after light	5.49081	5.24504	5.73658
12 h after light	5.22773	4.43203	6.02343
4 h after dark	9.790445	8.92259	10.6583
8 h after dark	6.79089	6.77142	6.81036
12 h after dark	5.945655	5.63954	6.25177