condition	mean	min	max
4 h after light	2.275935	1.847	2.70487
8 h after light	4.9662	4.41834	5.51406
12 h after light	4.051025	3.59744	4.50461
4 h after dark	5.329065	4.77193	5.8862
8 h after dark	2.63599	2.52393	2.74805
12 h after dark	2.172895	2.10975	2.23604