The R − L relations using different monochromatic luminosities and their corresponding bolometric luminosity. The top panels show the relations between the dust size and the monochromatic luminosities at (a) 14−195 keV, (b) optical 5100 Å, and (c) 12 μm. The bottom panels (d)–(f) show the R − L relation of the bolometric luminosity converted from these three monochromatic luminosities. The symbols are the same as in Fig. 2. The slopes of the relations using the RM and OI measurements agree with each other in all the luminosities we investigated. For the OI measurements, all the R − L relationships agree within 1σ with a slope of 0.5, except for the optical luminosity $\lambda L_{\lambda }(5100\mathrm{\AA })$.