condition	mean	min	max
4 h after light	9.48575	0.0	18.9715
8 h after light	2.59333	0.0	5.18666
12 h after light	12.596455	6.27381	18.9191
4 h after dark	8.357725	4.13405	12.5814
8 h after dark	3.10753	0.0	6.21506
12 h after dark	5.47398	4.07914	6.86882