Behavior of templates in the far-infrared. The templates have been redshifted and convolved with the MIPS relative response functions to predict their behavior at 24 and 70 μm. The points show the ratios of 70 to 24 μm flux densities in the EGS/FIDEL field for galaxies with L(TIR)>5 × 10 ⁹, and DEEP2 spectroscopic redshifts. Objects with low S ₇₀/ S ₂₄ are mostly AGNs. For 0 < z < 1, the templates define the space occupied by the measurements well. The "extra" template at low z is Zw 49.057, which evidently represents an anomalous SED not seen with any significant frequency in the FIDEL data. Above z ~ 1, the sensitivity limitations at 70 μm should result in a substantial bias in favor of sources with large 70/24 flux ratios and against those with small ratios. Nonetheless, compared with the locus of the family of templates, few such galaxies are identified. This result supports the work of Papovich et al. (2007) and Rigby et al. (2008) that indicate an increasing relative contribution of the ~ 8 μm region to the total infrared outputs of galaxies at redshifts of z ~ 2.