1D spectra extracted from central spaxels of three galaxies from the MUSE sample at different redshifts. In each panel, the black line is the observed spectrum and the red line is the best-fit model from pPXF. The gray regions mark the excluded wavelength range from fitting, and the green markers are residuals between data and the fitted model at each wavelength. The blue pixels, generally emission lines or sky residuals, have been excluded by sigma-clipping.