condition	mean	min	max
4 h after light	6.00542	5.64851	6.36233
8 h after light	6.479794999999999	6.17702	6.78257
12 h after light	6.996625	6.50482	7.48843
4 h after dark	10.01643	9.57786	10.455
8 h after dark	10.7212	10.7108	10.7316
12 h after dark	9.630185	9.28713	9.97324