Left: difference between the CIGALE attenuation-corrected FUV luminosities per unit area and those estimated using a constant k_i from Liu et al. (2011) and Hao et al. (2011) (y-axis, first two rows), a variable k_i estimated from one of the linear relations with the FUV−NIR colours given in Table 4 (y-axis, other rows), and the estimated FUV attenuation directly obtained from the CIGALE SED modelling (x-axis). The first column is based on the 24 μm band and the second column on the TIR. Right: same but estimating k_i from one of the linear relations with the NIR luminosity density per unit area given in Table 5.