Median and dispersion of the difference (i.e., residuals) between the IR luminosity based on the 24  μm flux (i.e., ) and that predicted with different methods, as a function of different galaxy physical parameters. In each panel red-filled circles refer to the NRK method, green squares to the NRK sSFR-corrected and open-blue triangles to the SED fitting (open-blue triangles). Top-left panel shows the residuals as function of redshift, top-right of total SFR, bottom-left of stellar mass and bottom-right of specific SFR. The number distribution for each physical parameter is shown as an histogram in the lower part of each panel.