condition	mean	min	max
4 h after light	6.587205	5.78856	7.38585
8 h after light	7.80061	7.6659	7.93532
12 h after light	8.681275	8.35949	9.00306
4 h after dark	10.464099999999998	10.1429	10.7853
8 h after dark	8.129470000000001	8.04733	8.21161
12 h after dark	8.471775000000001	8.0371	8.90645