Marginalised posterior likelihood distribution for our best MCMC fit to a GNFW pressure profile with free parameters [P₀,c₅₀₀,α,β] and γ = 0.31. The best fit values of the parameters are marked as white crosses and solid red lines, respectively, on the 2D and 1D posterior distributions. On the 2D distributions, the white triangles mark the value of the A10 parameters, while the red, purple and green solid lines define, respectively, the 68, 95 and 99% confidence levels.