v/σ radial profile, displayed in dashed red contours (values in the left-axis), and light-weighted average age, in solid blue contours (values in the right axis) for NGC 1433. We display the median values together with the first and third quartiles. The vertical dotted black line marks the ND radius and the hatched area the representative ring. Note that the representative ring is placed in the first v/σ minimum outside the ND, which matches the oldest mean age.