Examples of different behaviour of the D_n(4000) indices along the galactic radius. Panel a: M-10215-12705, an example of galaxy with the increasing D_n(4000) towards the centre at the central region. Panels b,c: M-9500-12702 (panel a) and M-8335-12701 (panel b), examples of galaxies where the D_n(4000) at the central region increases up to some radius and then decreases towards the centre. Panel d: M-8454-12702, an example of the galaxy with a small variation in the values of D_n(4000) indices along the radius. In each panel, the grey points denote D_n(4000) indices in the individual spaxels, the red circles mark the median values of the D_n(4000) in bins of 0.05 in the fractional radius R/R₂₅, the bars show a scatter in D_n(4000) about the median value in the bins, and the red dashed line shows the median value of the D_n(4000) indices in all spaxels within the optical radius. The horizontal bar indicates the point spread function in the MaNGA measurements.