condition	mean	min	max
4 h after light	8.6716515	8.6363	8.707003
8 h after light	8.3139585	7.448174	9.179743
12 h after light	8.015256	7.863524	8.166988
4 h after dark	7.710261	7.686607	7.733915
8 h after dark	7.832748	7.324617	8.340879
12 h after dark	8.238943	8.238943	8.238943