condition	mean	min	max
4 h after light	6.75073	6.585310000000001	7.0292699999999995
8 h after light	6.5724833333333335	6.39038	6.70989
12 h after light	6.307840000000001	6.10615	6.54014
4 h after dark	6.542983333333334	6.27859	6.83403
8 h after dark	6.83753	6.52988	7.195930000000001
12 h after dark	6.784386666666666	6.6482600000000005	6.985289999999999