condition	mean	min	max
4 h after light	8.66694	8.46609	8.8205
8 h after light	8.833693333333335	8.7073	9.0058
12 h after light	9.066650000000001	9.03351	9.09646
4 h after dark	9.322470000000001	9.20116	9.42763
8 h after dark	9.187743333333334	9.049560000000001	9.33488
12 h after dark	9.181223333333334	8.95244	9.38691