condition	mean	min	max
4 h after light	6.8460350000000005	6.44847	7.2436
8 h after light	6.864275	5.94102	7.78753
12 h after light	9.102865	7.82553	10.3802
4 h after dark	12.81715	11.8493	13.785
8 h after dark	10.028855	9.72201	10.3357
12 h after dark	8.76744	8.61801	8.91687