condition	mean	min	max
4 h after light	18.0743295	15.11086	21.037799
8 h after light	11.408530500000001	11.142077	11.674984
12 h after light	11.317919	9.908637	12.727201
4 h after dark	13.871312	13.720212	14.022412
8 h after dark	14.6452615	14.022412	15.268111
12 h after dark	68.824813	68.824813	68.824813