Effect of the adoption of M_H2 from C20 or from this work. Top row: Dust vs molecular gas mass, adopting the M_H2 estimate from C20 and presented here (left and right panel, respectively). The correlation coefficients (namely, P and K) are reported in the bottom left corner of both panels. In the right panel, objects are color-coded based on the survey from which the data were taken. M_H2 upper limits are marked as shown in the legends. Bottom row: DTGR vs molecular fraction, with M_H2 as in the top row. Upper limits and galaxies are shown as described in the corresponding upper panels.