Posterior distribution of free cluster-model parameters from the joint fit of radial T and XSB profiles. Top, middle, and bottom rows correspond to clusters A, B, and C, respectively. Left column: Isothermal beta-profile model (Sect. 3.3.1). Right column: Polytropic NFW-profile model (Sect. 3.3.2). The blue solid lines show the median of each posterior distribution. For the 2D histograms, contours show the 1σ, 2σ, and 3σ levels. For the 1D histograms, dashed lines show 1σ levels. The free background-model parameters are omitted for clarity but they do not show any degeneracy with the cluster-model parameters.