condition	mean	min	max
4 h after light	4.02314	3.9455699999999996	4.129980000000001
8 h after light	4.07581	3.9928	4.23457
12 h after light	3.975656666666667	3.872	4.1189800000000005
4 h after dark	4.016896666666667	3.90925	4.16996
8 h after dark	3.92725	3.85795	3.98604
12 h after dark	3.9936000000000003	3.9786900000000003	4.00427