condition	mean	min	max
4 h after light	5.310230000000001	5.25889	5.36157
8 h after light	4.75031	4.5187	4.98192
12 h after light	5.61411	5.35883	5.86939
4 h after dark	7.839425	7.15084	8.52801
8 h after dark	7.863305	7.57233	8.15428
12 h after dark	7.3369800000000005	6.92977	7.74419