Upper: comparison of SiO luminosity and clump mass. Lower: L_SiO/L_bol versus L_bol/M_dump. The markers are as same as Fig. 6. The color bars for both the panels present dust temperature. The dashed black and blue lines in the upper panel are the best fits to data points of three surveys and only our survey, respectively. The gray and blue shaded regions present 2σ confidence intervals for the best fits matched with the same colors.