condition	mean	min	max
0 h after light	8.29561	8.22882	8.3624
4 h after light	9.201635	8.11317	10.2901
8 h after light	6.357505	6.2423	6.47271
4 h after dark	12.1462	11.9861	12.3063
8 h after dark	13.75395	12.8342	14.6737
12 h after dark	9.51479	9.31767	9.71191