Examples of fits for the SPECZ sample with various redshifts, values, and AGN contributions. The observed wavelength is plotted on the x-axis. On the y-axis the observed fluxes are plotted with colored points. The best model and its different components (spectra of the unattenuated stellar, dust (thermal) and AGN emission) are plotted as lines. The different colors and lines are described in the legend inside the top left plot. In the top right plot the value of frac_AGN is not reported since we do not find any AGN component for this source.