condition	mean	min	max
0 h after light	15.77085	15.1495	16.3922
4 h after light	8.320255	6.84927	9.79124
8 h after light	3.05867	2.98114	3.1362
4 h after dark	3.82656	3.04631	4.60681
8 h after dark	7.07653	6.34106	7.812
12 h after dark	10.904025	7.97185	13.8362