Upper: comparison of L_Sio and n(H₂) toward sources having n(H₂) parameter available. Lower: comparison of L_Sio/L_bol and n(H₂) toward sources having n(H₂) and L_bol parameters. The color bars for both the panels present dust temperature. The black and blue dashed lines in the upper panel are the best fits to data points with SiO wings or without. The blue shaded region presents 2σ confidence intervals for the best fit for non-Sio wing sources indicated by open cyan circles. The markers are same as for Figs. 7 and 8.