Accretion timescale for Jupiter-mass planets with different accretion fractions f_acc given as numbers close to the lines. For the first 6000 yr the planets were on fixed orbits and their mass kept constant, while already gas was removed in the vicinity of the planet. Then the planets began to migrate and the gas removal was continued, but it was not added to the mass of the planet. The models were calculated with surface density Σ₀ = 88 g/cm² (red) and Σ₀ = 880 g/cm² (blue), respectively.