Evolution of the normalized luminosity g_rad/g for burst 1 of the synthetic data. Constraints on the surface fraction S_f are also shown for model C, which is the only one of our models in which this parameter is free. The dotted black line with the scale on the right axis shows the corresponding standard deviation of the obtained parameter distributions. The blue dashed line shows the input value used to create the data. The intensity of the red coloring is proportional to the probability density. This figure shows that when the fitting model is consistent with the model used to produce the data, we obtain parameter values that are accurate and precise.