Probability density distributions for the free parameters in our model configuration. The spacing between bars represents the spacing of the parameter grid. The width of the bars is set so they do not overlap due to the unequal spacing. The blue distribution corresponds to the first batch of models. The parameter grid was refined based on this batch. After the second fit iteration, the red distributions are found. The median values of the second batch are indicated with vertical dashed lines. The solid vertical lines indicate the values for the model with the lowest overall χ².