condition	mean	min	max
4 h after light	3.9352799999999997	3.8493199999999996	4.06452
8 h after light	3.9779633333333337	3.9362800000000004	4.04966
12 h after light	4.0226033333333335	3.8933800000000005	4.24716
4 h after dark	3.9562633333333337	3.91636	4.00928
8 h after dark	3.97704	3.95161	4.0016
12 h after dark	3.9734133333333332	3.9431199999999995	3.99097