Mean ΔSFR_fr for galaxies grouped by bar strength (rows) and disk thickness (columns), shown as a function of look-back time across radial bins. Colored lines represent SFHs in six radial bins (h_d), and shaded circles mark the magnitude of ΔSFR, reflecting migration-induced differences between final and birth radii. From left to right, columns correspond to increasing disk thickness, while from top to bottom corresponds to increasing bar strength. A completeness threshold is applied, where a point is shown only if at least 35% of galaxies in that disk thickness group have nonzero SFR_Birth in the corresponding age bin.