condition	mean	min	max
0 h after light	8.360795	8.22008	8.50151
4 h after light	6.674715	6.59377	6.75566
8 h after light	8.825395	8.65402	8.99677
4 h after dark	9.428450000000002	8.88958	9.96732
8 h after dark	7.929515	7.33152	8.52751
12 h after dark	8.52158	8.49009	8.55307