Normalised data pressure profiles, best-fit gNFW models, and their relative difference. Top: Coloured profiles show the individual data pressure profiles (from Fig. 1) for the 24 clusters normalised by the best P_500, i and R_500, i values when fitting the individual masses with dynamical mass estimates as priors. Green, red, and blue correspond to the fits assuming respectively δ = 2/3, δ = 2/3 + 0.12, and δ as a free parameter. Bottom: Data pressure profiles in grey, normalised by P_500, i and R_500, i values, with masses fixed in the fit and set to the dynamical mass estimates. The solid black profile in each panel indicates the best-fit gNFW profile for that case, with the dotted profiles showing the fitted intrinsic scatter ℙ(x)exp[±σ_int(x)]. The dashed profiles in the top (bottom) panels correspond to the best-fit gNFW for the mass-fixed (fitted) cases.