condition	mean	min	max
4 h after light	4.192076666666667	4.0814	4.3516699999999995
8 h after light	4.09752	4.06948	4.14691
12 h after light	4.12782	4.0355	4.28984
4 h after dark	4.135466666666667	4.041930000000001	4.25138
8 h after dark	4.090816666666667	3.88255	4.35188
12 h after dark	4.062063333333334	4.03498	4.0980099999999995