Distributions of final positions of planets formed at t₀ = 10τ_c by the DWD systems adopted in this work. All the histograms have Y-axis in log scale and each bin is normalised with respect to the total number of planets formed by each system. The largest histograms show the distribution of the final positions of all the planets for each DWD system. Each of these histograms has two smaller overlapping histograms showing the final positions of Ns and GGs. When t₀ = 0.1, 1 Myr, all planets (which consists only of SNs and Ns) migrate towards the inner radius of the disc, r_in (see Appendix A). Therefore, the related histograms would only show one bin around the r_in value of the discs.