condition	mean	min	max
0 h after light	5.970275	5.4328	6.50775
4 h after light	3.90647	3.20814	4.6048
8 h after light	3.72318	3.39806	4.0483
4 h after dark	3.738515	2.30802	5.16901
8 h after dark	5.45113	5.02704	5.87522
12 h after dark	5.5373850000000004	5.29787	5.7769