Heat maps showing regions of the parameter space as a function of the value of cumulative reduced chi-squared for each simulation. The colours show the logarithm of the median of the 100 values of ${\stackrel{\sim }{\chi }}^2$ associated to each resampling obtained by the bootstrap procedure. The rows, from top to bottom, show the heat maps for the fits with SPARC+SPIDER, SPARC+ATLAS^3D, SPARC+MaNGA DynPop, and LTGs+ETGs from MaNGA DynPop. The red point shows the values of Table 5, while the green points are the values from the respective best-fit simulations.