condition	mean	min	max
4 h after light	8.3095635	7.779684	8.839443
8 h after light	8.204958	7.906953	8.502963
12 h after light	8.4211065	8.33925	8.502963
4 h after dark	8.0377685	7.718921	8.356616
8 h after dark	8.645554	8.078366	9.212742
12 h after dark	8.705555	8.705555	8.705555