Profiles of the (top) electron density and pressure, (bottom) temperature and entropy with, overplotted in blue, the joint fit obtained using the NFW-polytropic functional forms relating together the parameters c₅₀₀ and Γ (see Table 3 and Sect. 3), and, in red, the functional form used in Ghirardini et al. (2019). The shaded area around the functional form represents the 1σ confidence level on the best fit, while the dashed lines represents the scatter around the best fit. The vertical dashed and dotted lines represent the location of R₅₀₀ and R₂₀₀, respectively.