Posterior distribution of parameters from MCMC RADEX fitting of CH₃OH (5-4) line series. The column densities of A∕E type are velocity averaged values (log cm⁻²/km s⁻¹). The vertical dashed lines in the 1D histograms show the quantiles of 10%, 25%, 50%, 75%, and 90%. The contour levels in the 2D histograms indicate 0.5σ, 1σ, 1.5σ, and 2σ. The figure shows an example of the fitted parameters of observed lines in one pixel of clump G08b.