Pebble accretion efficiency, ℰ, as a function of the Stokes number, St, for three values of planet mass, M_pl, across our parameter range. We compare numerical measurements obtained with our DENEB code (red points and segments) with the scaling laws appropriate for the 2D (dashed black curve) and 3D (dotted grey curve) regimes of pebble accretion (Liu & Ormel 2018). The error bars around the red points correspond to the Poisson counting uncertainties.