condition	mean	min	max
4 h after light	17.948901	17.655871	18.241931
8 h after light	19.35249	18.647992	20.056988
12 h after light	16.9117625	15.539985	18.28354
4 h after dark	16.454596	15.295616	17.613576
8 h after dark	17.721249999999998	17.612681	17.829819
12 h after dark	17.193386	17.193386	17.193386