condition	mean	min	max
0 h after light	8.261545	8.25418	8.26891
4 h after light	9.455435	8.05997	10.8509
8 h after light	6.21319	6.12469	6.30169
4 h after dark	4.735555	3.39112	6.07999
8 h after dark	9.349125	8.19785	10.5004
12 h after dark	14.78725	13.7752	15.7993