Dispersion of the resulting posterior distribution of stellar mass velocity dispersions (Σ_*), ages and metallicity from the Monte Carlo realizations, as a function of the number of Monte Carlo iterations, for 5 representative Voronoi bins. The color code indicates the galactic environment of each Voronoi bin. Solid lines correspond to mass-weighted quantities, and dashed lines to their light-weighted counterparts. The vertical black line indicates the adopted number (20) of Monte Carlo iterations to estimate the uncertainties in the analyses presented in this paper.