Distribution of changes in the guiding radius, $R_{{ɡ}_f}-R_{{ɡ}_i}$, (radial migration) as a function of $R_{{ɡ}_i}$ for different time intervals during the 6 Gyr integration. Each set of figures represents a different simulation run with parameters as listed in Tables 1 and 2. Vertical lines represent the theoretical values of resonances: green lines for resonances produced by the galactic bar and grey lines for resonances caused by the spiral arms. In both cases, the solid lines represent OLRs and the dashed line the m = p = 1 co-rotation resonance.