Notes. The columns show the initial total mass in protoplanetary embryos (T. Mass (M_⊕)), the number of planetary embryos (N_emb), and the gas dissipation timescale (3 or 9 Myr). The numbers expressed in percentage report the fraction of simulations that are successful, i.e., have the mass ratio of the two most massive cores beyond Saturn between 1 ≤ M₁/M₂ ≤ 1.5 (innermost and second innermost cores beyond Saturn), and each of them have experienced at least one giant collision (their masses are at least as high as 12 M_⊕). The values in brackets correspond to the fraction of simulations where at least one of the Uranus-Neptune analogs suffered at least two giant collisions (and the other object at least one), their mass ratio is between 1 ≤ M₁/M₂ ≤ 1.35 and they are both at least higher than 12 Earth masses.