The q_W3PAH value as a function of W3PAH, 1.3 GHz luminosity, stellar mass, and q_TIR vs TIR luminosity. Error bars are displayed for each object unless smaller than the symbol. Except for the errors in the mass determination, which are not shown. The solid line is the same as in Yun et al. (2001)q = 2.34. The blue and red dotted lines show the value corresponding to three times larger radio and W3PAH flux density than expected.