condition	mean	min	max
4 h after light	7.7542800000000005	7.58201	7.87862
8 h after light	7.977736666666667	7.827380000000001	8.23627
12 h after light	7.9664633333333335	7.71461	8.20289
4 h after dark	7.652393333333333	7.4218	7.852810000000001
8 h after dark	7.48309	7.20604	8.00366
12 h after dark	7.6959333333333335	7.616810000000001	7.843999999999999