Efficiency of pebble accretion parameter, ε_PA, as a function of the planetary embryo’s size and pebble’s Stokes number calculated at 5 (left panel) and at 30 au (right panel) in the compact disk model with α = 10⁻⁴. The dotted line corresponds to the pebble accretion onset (when the aerodynamic effects become important). The gray, dashed line shows the transition between the headwind and shear regimes of pebble accretion. The dashed-dotted line shows the transition between 3D and 2D pebble accretion.