Scatter of pressure profiles for the 24 clusters in our sample. The shaded area indicates the 16th to 84th percentiles for the intrinsic scatter profile fitted to data pressure profiles (δ free case). The intrinsic scatter may not be reliably constrained beyond x ∼ 0.4. The dashed line indicates the scatter of the individual normalised profiles with respect to the best-fit gNFW model. Statistical uncertainties of the individual pressure profiles are indicated with crosses and circles for the pressure bins corresponding to XMM-Newton and Planck data, respectively. All scatters are given in P₅₀₀ℙ(x) units.