Migration history for all planets that get close to the observed orbit. The semi-major axis and eccentricity are scaled with the observed a_obs and e_obs, see Table 1. The grey area marks the success criterion, where the final parking position of the planet deviates by no more than 10% from the observed value, that is, Δa_p ∕a_p,obs ≤ 10%. For the discs, we chose α = 10⁻⁴ and h = 0.04, plus one additional model for Kepler-38 using the stated values.