condition	mean	min	max
4 h after light	7.885325	6.67378	9.09687
8 h after light	8.220185	7.40948	9.03089
12 h after light	5.931095	5.39839	6.4638
4 h after dark	5.31114	5.27303	5.34925
8 h after dark	4.69892	4.44847	4.94937
12 h after dark	5.69688	5.65722	5.73654