Luminosity density ρ_ν (in units of hL_⊙ Mpc^-3) of dusty galaxies, derived from the Euclidean level p and scaled to the luminosity density of: SCUBA 850 μm data (Dunne et al. 2000; Serjeant & Harrison 2005) (see Eq. (12)); or IRAS 60 μm data (Soifer & Neugebauer 1991; Bertin & Dennefeld 1997; Takeuchi et al. 2003) (see Eq. (11)). Red circles: estimate from Planck for dusty galaxies (this work); green diamonds: compilation from Takeuchi et al. (2006); black dots: model from Serjeant & Harrison (2005). Values are given in Table  9. Our Planck estimates lie in the shaded area. Note that we take h = 0.71 here.