(Top panel) Uncertainties in determining L_IR from monochromatic observations (i.e., MIPS-24 μm, PACS-70 μm, PACS-100 μm or PACS-160 μm bands) and the Dale & Helou (2002) SED library. These uncertainties are derived by taking the standard deviation of the log(L_IR) distribution provided when normalizing all Dale & Helou (2002) SED templates to the same monochromatic flux density (± 20% to account for typical photometric uncertainties, i.e., S/N ~ 5) at a given observed wavelength (i.e., this observed wavelength depends on the band and redshift of interest). (Bottom panel) Fraction of PACS sources detected (i.e., S/N > 3) in only one of our PACS passbands (i.e., not with a 70 + 100  μm, 70 + 160  μm, 100 + 160  μm or 70 + 100 + 160  μm detections) as a function of redshift.