Results from the MC error estimation with 400 iterations for the galaxy MATLAS-269. The histograms show the distributions of the fit values for the recessional velocity V, the age, and the metallicity obtained from pPXF by randomly flipping the sign of the residual between the galaxy spectrum and the initial best fit. The solid lines indicate the best-fit values of the original spectrum, while the dashed lines show the standard deviation of the MC realizations. For the recessional velocity shown in the leftmost panel, we fit a Gaussian curve (dashed line) to the distribution of MC realizations.