Maps across the FOV of the maximum blue- (left panel) and red-shifted (central panel) velocities for the [O III] best-fit line profile. In particular, the two panels show the differences between maximum velocities (V₀₂ and V₉₈) and stellar velocity (V_star), as labelled, to reveal outflow signatures. In the V₉₈ − V_star map the shell region (S) associated with both receding and approaching high-v gas is shown. The right panel shows the [O III] velocity width W80.