condition	mean	min	max
0 h after light	6.44299	6.30468	6.5813
4 h after light	6.5648	4.49229	8.63731
8 h after light	8.51685	7.75758	9.27612
4 h after dark	6.388305	5.5676	7.20901
8 h after dark	7.574195	6.93983	8.20856
12 h after dark	6.66584	6.13748	7.1942