$\frac{v_{\mathrm{c}}^2(R)R}{G}$ for the fiducial potential model and its different components individually. This quantity can be taken as a proxy for the mass enclosed within a certain radius R, and this plot thus gives a feeling for the relative importance of each component at different radii on the midplane. The orbits of the HS stars reach between 5 - 20 kpc (see Fig. 3), and in this range the DM halo dominates. The grey hatched area marks the region R > 15 kpc and data in this distance range was not included in the MCMC fit.