Size of the largest grains entrained from a point R along the base of the wind (blue, peak at about 20 AU); the saw-tooth appearance of the curve at larger R is caused by the finite resolution of the underlying gas grid. When comparing to Hutchison et al. (2016a, their Fig. 7 for M_* = 0.75 M_⊙) (orange, peak at around 40 AU), we can see the size enhancement – especially at smaller R – caused by the inclusion of X-rays in our photoevaporative wind model. The blue dashed line represents our results scaled down by a factor of 3, to compensate for the differing internal grain densities of Hutchison et al. (2016a) and this work; yet, Ṁ_w still differsbetween the models, making a direct comparison difficult. The MHD wind model investigated by Miyake et al. (2016, their Fig. 4) (green) shows a distinctly different entrainment curve, starting off at very high a₀ in the jet region but dropping towards max (a₀) = 0 very quickly.Around R ≃ 140 AU, our max (a₀) plummets to 0.