SED-derived stellar masses with observed WISE W1 luminosities for mass-to-W1 light ratios plotted against observed W1 luminosity; the underlying gray scale gives the GSWLC sample from Salim et al. (2016, see text for details). Squares (orange) show CIGALE M_star values, triangles (blue) GRASIL, and circles (red) MAGPHYS. The robust regressions for each SED-fitting algorithm are shown as solid curves, and the σ values are given in the upper left corner. The horizontal dashed lines show the mean of Υ^W1 for M_star values from the three fitting codes: 0.30 (CIGALE), 0.22 (GRASIL), and 0.25 (MAGPHYS).