condition	mean	min	max
4 h after light	3.87778	3.847	3.92791
8 h after light	3.9400166666666667	3.8475599999999996	4.04049
12 h after light	3.98383	3.90085	4.0817
4 h after dark	3.93867	3.8546300000000002	4.03118
8 h after dark	3.865593333333333	3.8353900000000003	3.9118699999999995
12 h after dark	3.8447333333333336	3.818	3.865