condition	mean	min	max
4 h after light	6.0972	5.4475	6.63577
8 h after light	6.67178	1.70978	11.0111
12 h after light	10.071986666666666	6.14286	13.854
4 h after dark	14.3331	12.7043	16.8512
8 h after dark	12.824	10.9045	16.0067
12 h after dark	7.481636666666667	6.47373	9.19328