condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.18567675 0.0 0.427952 3 h after dark 0.260841 0.0 0.551339 6 h after dark 0.14058266666666666 0.0 0.262974 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0