Same as Fig. A.6, but for the luminosity ratio of SiO to CO for each molecular complex. We show one plot for each region. The x-labels indicate the number of each velocity componet as defined by Gaussian fit (see Table 3). The main component is indicated by an asterisk. In blue we show the luminosity ratio for disk clouds and in red we show the luminosity ratio for Galactic center clouds. The ubication of each region is shown in the SiO integrated intensity map with an arrow. The highest intensities ratio are placed at l > 1°.