condition	mean	min	max
4 h after light	6.602545	6.59951	6.60558
8 h after light	4.45842	4.22617	4.69067
12 h after light	7.9326099999999995	7.22472	8.6405
4 h after dark	14.810649999999999	14.7412	14.8801
8 h after dark	16.55685	14.9886	18.1251
12 h after dark	10.90755	10.5507	11.2644