condition	mean	min	max
4 h after light	7.661525	6.89561	8.42744
8 h after light	4.81866	4.58602	5.0513
12 h after light	4.48122	4.44349	4.51895
4 h after dark	4.893136666666667	4.51018	5.45825
8 h after dark	6.23648	6.07606	6.34273
12 h after dark	6.2599833333333335	5.77079	6.67596