Pebble accretion efficiency vs dimensionless stopping time for several values of the vertical turbulence strength, parameterized by α_z (colors). Open symbols give ϵ obtained from directly integrating the stochastic equation of motion, while crosses give the results from the hybrid algorithm. Crosses are offset by 20% to the right for clarity. Error bars correspond to the Poisson counting error on the number of hits. For α_z = 0 the triangles give ε resulting from the local calculations and the black line gives our fit to the 2D limit (ϵ_2D), which we obtained in Paper I. The dotted lines gives ϵ_3D accounting just for the density correction Eq. (22). The colored solid lines give ε accounting for all 3D/2D-effects (Eq. (40)) as explained in the main text. The right y-axis converts ε into the pebble growth mass – the total amount of pebbles needed to e-fold the mass of the planet – assuming a solar-mass star.