condition	mean	min	max
0 h after light	3.937805	3.80761	4.068
4 h after light	2.239325	1.93992	2.53873
8 h after light	2.562755	2.53197	2.59354
4 h after dark	3.61261	3.47773	3.74749
8 h after dark	4.404845	4.38373	4.42596
12 h after dark	4.414605	3.45612	5.37309