condition	mean	min	max
0 h after light	6.81587	6.17095	7.46079
4 h after light	14.35725	12.8842	15.8303
8 h after light	16.455849999999998	15.8889	17.0228
4 h after dark	13.27355	12.9566	13.5905
8 h after dark	10.9122	10.5272	11.2972
12 h after dark	9.267175	8.88887	9.64548