Gradients of deprojected age and metallicity profiles for light- and mass-weighted mean values along the bar major and minor axes. An example of such profiles is shown in Fig. B.2. Gradients were measured between the second inner break and the bar length as seen in the aforementioned figure and as discussed in the text. The minor axes are extended into the disc within the bar radius. Points are grouped into three bins of bar strength Q_b. NGC 5248 is an outlier and shown separately. Error bars show standard errors from the linear regressions to the profiles.