condition	mean	min	max
4 h after light	8.080335	7.70977	8.4509
8 h after light	7.38013	6.97468	7.78558
12 h after light	7.8289100000000005	7.82752	7.8303
4 h after dark	13.43085	13.0496	13.8121
8 h after dark	13.55845	13.3524	13.7645
12 h after dark	13.33255	12.4737	14.1914