Two-dimensional marginalized posterior probability distributions of the five assumed model parameters (see details in Section 3.3) obtained with the MCMC technique. The histograms overplotted on top of the individual columns present the one-dimensional marginalized posterior probability distributions of the parameters labeled at the bottom of the columns. The red contour in each panel indicates the 1σ confidence level. The red solid and dotted lines in each histogram represent the best-fit value and the 68% probability intervals of the parameter concerned, respectively. The resulting values and uncertainties of the model parameters are also marked on the top of the individual columns.