Ratio of the monochromatic luminosity at 850 μm to the ISM mass as a function of monochromatic luminosity at 850 μm. Circles show galaxies of our sample and large triangles show galaxies from Scoville et al. (2014). Symbols are colored by the L_IR following the color bar. The median value for our sample is shown by the dashed line, while dotted lines show the median values obtained by Scoville et al. (2014) and by Hughes et al. (2017). The black cross shows the typical error.