${\mathrm{L}}_{\mathrm{CO}(1-0)}^{\prime }$ versus monochromatic luminosities. The names of telescopes and instruments used to derive the luminosities on the x-axis are reported in the upper-left corner of each panel. The galaxies from sample A (see text) are colored in each panel, while the remaining sources from sample B are in gray in each panel. The best-fit relation on data from sample A (B) is the solid (dashed) black line, and the 68% confidence levels are shown as a cyan (light gray) region. Below, the number of galaxies used in the fitting procedure and the measured intrinsic dispersion for samples A and B, respectively. Correlation coefficients (namely, P and K) for samples A and B are shown in the lower-right corner of each panel.