condition	mean	min	max
4 h after light	7.597833333333334	7.23026	8.063080000000001
8 h after light	6.26788	5.93853	6.73607
12 h after light	6.353156666666666	6.2485	6.4897
4 h after dark	6.79541	6.42644	7.29945
8 h after dark	6.978800000000001	6.413530000000001	7.5719899999999996
12 h after dark	8.038556666666667	7.89336	8.16213