Notes. f₀ is the peak abundance relative to H2 and R_e is the e-folding radius. n is the number of observed lines included in our radiative transfer analysis. N is the column density obtained from our radiative transfer modelling. ^(a)indicates models for which upper limits cannot be placed on the uncertainties due to optical depth effects that come into play at higher abundances of CS. ^(b)indicates models which cannot be radially constrained with the available data. Where only one observed line is available, R_e is calculated from whichever is applicable out of Eqs. (3) and (4). ^(c) W Aql is originally modelled in Brunner et al. (2018), based in part on ALMA observations, and is only included here for completion. Hence, uncertainties, N and are omitted for this source since the fit to a radial profile derived from an ALMA image is not comparable to fits based only on single-dish data.