Two-component RADEX non-LTE model for region 8 (in red) over-plotted on the rest-frame spectra (in black). The common velocity range is depicted at the bottom left panel and was obtained in the same manner as in Fig. C.1 but this time subtracting a v_LSR velocity of 205 km s⁻¹ (see Table 1). Line frequencies are indicated above each panel in GHz and by green dashed lines inside the panels. Previous single-component LTE modeling (see Fig. 7) is shown in blue for comparison.