condition	mean	min	max
0 h after light	22.25875	21.0573	23.4602
4 h after light	9.352355	9.15906	9.54565
8 h after light	4.778565	4.72814	4.82899
4 h after dark	9.10798	6.49476	11.7212
8 h after dark	13.47335	12.6382	14.3085
12 h after dark	15.8827	10.4594	21.306