condition	mean	min	max
0 h after light	4.182895	3.54548	4.82031
4 h after light	8.25271	7.99005	8.51537
8 h after light	18.613500000000002	18.561	18.666
4 h after dark	21.36455	18.603	24.1261
8 h after dark	10.641245000000001	9.80929	11.4732
12 h after dark	6.734875000000001	5.05817	8.41158