Ratio of derived to true (convolved) core size as a function of derived core mass for the same set of simulated core extractions as in Fig. B.1 and Fig. B.2. The error bars are ± 1σ where σ is the dispersion of the size ratio in each mass bin. The horizontal dashed line marks the size ratio of 1 expected in the case of perfect core extractions and size estimates. Note how the median core size measured in each mass bin remains within 5% of the true core size above the ~ 90% completeness of ~ 0.2 M_⊙ in derived core mass.