Joint (below the diagonal) and marginal (in the diagonal) posterior distributions for the physical parameters involved in the Milne-Eddington model. The label at the top of each column provides the median and the uncertainty defined by the percentiles 16 and 84 (equivalent to the standard 1σ uncertainty in the Gaussian case). Also, the contours are shown at 1 and 2 sigmas. The original values of the parameters are indicated with gray dots and vertical/horizontal lines.