condition	mean	min	max
4 h after light	7.581261	6.922959	8.239563
8 h after light	7.389051	7.037566	7.740536
12 h after light	7.740536	7.740536	7.740536
4 h after dark	8.759371999999999	8.729276	8.789468
8 h after dark	7.3340689999999995	7.165748	7.50239
12 h after dark	7.138399	7.138399	7.138399