condition	mean	min	max
4 h after light	5.720420000000001	5.5561300000000005	5.81845
8 h after light	5.74805	5.69831	5.83896
12 h after light	5.730006666666666	5.639469999999999	5.849080000000001
4 h after dark	5.81124	5.60324	6.05783
8 h after dark	5.708496666666667	5.52942	5.85072
12 h after dark	5.787983333333333	5.652769999999999	5.97138