condition	mean	min	max
4 h after light	3.9349999999999996	3.8839699999999997	3.9935099999999997
8 h after light	4.000636666666667	3.97201	4.02044
12 h after light	3.9012366666666667	3.87149	3.93486
4 h after dark	3.95975	3.9276800000000005	3.9764
8 h after dark	3.9104433333333333	3.8566800000000003	3.9571099999999997
12 h after dark	3.9043033333333335	3.8815800000000005	3.9481300000000004