condition	mean	min	max
4 h after light	4.167786666666667	4.095680000000001	4.22612
8 h after light	4.284736666666666	4.12059	4.42711
12 h after light	4.240333333333334	4.088830000000001	4.40713
4 h after dark	4.263190000000001	4.16645	4.36969
8 h after dark	4.3017433333333335	4.26094	4.37934
12 h after dark	4.31674	4.12951	4.52548