condition	mean	min	max
4 h after light	3.7906133333333334	3.7136	3.9367099999999997
8 h after light	3.87504	3.8529199999999997	3.90745
12 h after light	4.0407633333333335	3.95381	4.1176900000000005
4 h after dark	4.5725066666666665	4.05685	4.8640300000000005
8 h after dark	4.12239	4.03431	4.22441
12 h after dark	4.1021133333333335	3.86156	4.22504