Comparison between the metallicity gradients (filled black circles) estimated by the DB-A fit, ${\mathrm{\nabla }}_{\text{(O/H)}}^{\mathrm{Mid}}$, and by the Theil-Sen method, ${\mathrm{\nabla }}_{\text{(O/H)}}^{\mathrm{TS}}$, for galaxies exhibiting, from top to bottom, (i) linear profiles, (ii) inner break profiles, (iii) outer break profiles, and (iv) double break profiles. When corresponds, inner (teal symbols) and outer (orange symbols) metallicity gradients are also shown. Vertical lines are included as a visual aid to identify gradients belonging to the same galaxy.