Planetary growth tracks for DWD₁ disc model with r_c = 150 au and T_eff.2 = 75 000 K. From top to bottom: ξ = 0.01, 0.015, 0.02. Left panels: time-independent growth tracks. The vertical dot-dashed line indicates the radial coordinate r_t, where T = 1200 K. The dashed line represents the isolation mass profile for the given disc model (Eq. (19)). Right panels: time-dependent growth tracks. Starting from t₀, the tracks reach M_iso when they change slope (e.g. leftmost track at ~170 000 yr).