condition	mean	min	max
4 h after light	19.25488	18.481988	20.027772
8 h after light	15.402838500000001	14.22874	16.576937
12 h after light	12.4383215	11.728163	13.14848
4 h after dark	12.9978655	12.343813	13.651918
8 h after dark	12.7855405	12.172341	13.39874
12 h after dark	13.720276	13.720276	13.720276