condition	mean	min	max
4 h after light	16.01995	14.5542	17.4857
8 h after light	14.6746	13.8153	15.5339
12 h after light	13.44965	13.1026	13.7967
4 h after dark	19.1164	18.3077	19.9859
8 h after dark	17.520633333333333	16.0515	19.2798
12 h after dark	17.00313333333333	16.0905	17.9731