Comparison between the Álvarez-Márquez et al. (2016, blue dashed line), Schreiber et al. (2018, orange dot-dashed line), and Bethermin et al. (2017, red solid line) IR SED templates and the observed mean SEDs of SFR > 10 M_⊙ yr⁻¹ galaxies measured by stacking (black dots, see Sect. 4.2). The black dotted line is the best fit of the λ_{rest − frame} >  40 μm data points by a modified blackbody with β fixed to 1.8 (the temperature in the legend is provided in the rest frame). Upper and lower panels: 4 <  z <  5 and 5 <  z <  6, respectively.