Evolution of systems with nominal migration rate and two different pebble fluxes as function of time. Semi-major axis (left panels) and planetary mass (right panels) of 60 planetary embryos with two different pebble scalings, S_peb = 1.0 (top panels) and S_peb = 2.5 (bottom panels). Bodies shown in black migrate by type-I migration interior to 1 AU, while grey bodies correspond either to small bodies that do not grow or to bodies that are ejected from the disc via gravitational interactions with other bodies. Coloured bodies correspond to the most massive surviving bodies in the disc. The gas disc lifetime is 3 Myr after injection of the planetary embryos, where the disc dissipation is marked by the vertical black line. The embryos migrate with nominal migration and the innermost embryo is placed at 2.75 AU.