Grid of simulations for a = 1 au (left) and a = 10 au. r_p = 100 km. Top: mean time to reach the scattering mass as a function of initial surface density of planetesimals and initial core mass. The light green colour indicates the cases compatible with the meteoritic record. For grey circles the growth is too slow, and for black ones, too fast. Bottom: total amount of heavy elements acquired by the planet when attaining Jupiter mass. Solid circles highlight the cases that match the meteoritic constraints. The accretion rate of solids is taken as that of SI08 in the case of orange circles, and of OG in the case of purple circles.