Comparison between the “best-fit solution” and the “simulated solutions” from the Galfit routine for the galaxy AGC 572. From top to bottom is the comparison for the useful parameters of disk-scale length (rs) and axis ratio (b/a), respectively. The “best-fit solution” is represented by the solid line in each panel, and the dots represent the “simulated solutions” from 200 Monte Carlo simulations. In the bottom panel, the b/a values seem to be only three discrete values of 0.8108, 0.8109, and 0.8110. This is because the Galfit software has rounded its final output results to only four decimal places; any difference after the four decimal places cannot be apparent.