Typical output of the full-spectrum fitting procedure using BC03 (left) and MS11 (right) spectral synthesis models. In particular, we show the case of the median stacked spectrum derived for 11 < log (M/M_⊙) < 11.25 and z ~ 0.05. In the top panel the black curve is the observed spectrum, the red curve is the best fit model and grey shaded regions are the masked spectral regions (see Table 1). The bottom panel shows the ratio of the best fit model spectrum to the observed flux.