Notes. mean dust SED in K_RJ units, normalized to 1 at 353 GHz, from the fit with three templates. The values are not colour corrected. σ_stat ≡ statistical uncertainty on the mean dust SED. c_ν ≡ uncertainties on the inter-calibration [%] between Planck and WMAP frequencies (Planck Collaboration I 2014; Bennett et al. 2013). σ_cmb ≡ uncertainty on the mean dust SED introduced by the CMB subtraction multiplied by the inter-calibration factor c_ν. σ_tot ≡ total uncertainty on the mean dust SED. S/N ≡ signal-to-noise ratio on the mean dust SED. C ≡ colour-correction factors computed with a linear combination of the power-law model and the MBB parameters listed in Table 4. U ≡ unit conversion factors from thermodynamic (K_CMB) to Rayleigh-Jeans (K_RJ) temperature. mean intensity SED in K_RJ units, normalized to 1 at 353 GHz, derived from the correlation of the maps with the one-template fit. The values are not colour corrected. total uncertainty on the mean intensity SED with the one-template fit. mean intensity SED in K_RJ units, normalized to 1 at 353 GHz, derived from the correlation of the maps with the two-template fit. The values are not colour corrected. total uncertainty on the mean intensity SED with the two-template fit.