Gradients of light- and mass-weighted mean stellar age profiles along the cut #2 (see Fig. 8) perpendicular to the bar major axes (at 2/3 of the bar length) as shown in Fig. 9, as well as in Fig. C.1 and described in the text. The gradients from the major axes towards the leading (x-axis) and trailing (y-axis) edges of the bars are shown. The sense of rotation was determined assuming that spiral arms are trailing. Empty markers show galaxies for which the rotation is not clear. NGC 5248 is an outlier and shown separately. Error bars show standard errors from the linear regressions to the profiles.