condition	mean	min	max
4 h after light	7.9333	7.871892	7.994708
8 h after light	7.64403	7.278805	8.009255
12 h after light	8.5404975	8.092322	8.988673
4 h after dark	7.5217875	6.97895	8.064625
8 h after dark	8.0475835	8.034499	8.060668
12 h after dark	8.381146	8.381146	8.381146