Average spectral profiles for ¹³CO lines in thecorresponding subregions from No.1 to No.24, displayed in Fig. A.2. The black profiles represent the observed spectra, the magenta dashed profiles are our fitted results by one or two Gaussians. The fitted parameters for the main velocity components (including peak intensity, centroid velocity, and velocity dispersion) are given at the top of every subpanel. The blue profiles in No. 6 – No. 8 and No. 13 – No. 15 are the average C¹⁸O line spectra, which are amplified by a factor of 3. These C¹⁸O data are from MWISP CO surveys (Su et al. 2019). In each of those panels, the vertical green dashed line shows the centroid velocity of the main velocity component.