condition	mean	min	max
4 h after light	8.440153	7.986423	8.893883
8 h after light	8.282801	8.125196	8.440406
12 h after light	8.286604	7.884391	8.688817
4 h after dark	8.6955455	7.901076	9.490015
8 h after dark	7.6989485	7.671887	7.72601
12 h after dark	7.986423	7.986423	7.986423