Pairs plot showing the MCMC samples and posterior distributions for the six free parameters presented in Table 3. The contours mark the 1σ, 2σ, and 3σ regions of the distribution. The gray scale shades illustrate the density of samples, where darker means denser. The blue crosses indicate the best fit values for each parameter and the dashed vertical lines in the projected distributions indicate the median value and the 1σ uncertainty (34% on each side of the median).