Examples of SED fits of a spec-z source (ID=J021613.8-040823, upper) and a photo-z source (ID=J020245.0-044223, middle). The dust emission is plotted in red, the AGN component in orange, the attenuated (unattenuated) stellar component is shown by the solid yellow (blue) (dashed) line, while the green lines show the nebular emission. The total flux is represented in black. Below the SEDs, we plot the relative residual fluxes versus the wavelength. Lower panel: The probability density function of redshift, PDF(z), of the sources with a peak at z_peak = 3.55, and the sources with a peak at z_peak = 4.25, respectively. The vertical line shows the spectroscopic redshift of J021613.8-040823 at z_spec = 3.522.