Top left: integrated intensity map of ¹²CO emission from cloud G146.845-00.095+005.80 (ID 41) over the velocity interval 4–7.5 km s⁻¹. The red contour outlines the boundary of the ¹²CO structure, while the blue contour shows the boundary of the ¹³CO structure extracted within the ¹²CO structure. Top middle: integrated intensity map of ¹²CO reconstructed via the GaussPy+ and ACORNS algorithms. Top right: centroid velocity of ¹²CO. Bottom left: average spectra of ¹²CO (blue) and ¹³CO (green), smoothed to 0.2 km s⁻¹, with a centroid velocity of 5.80 km s⁻¹ and an FWHM of 0.78 km s⁻¹(Here, ﹩{\rm{FWHM}}=2\sqrt{2\mathrm{ln}2}\,{v}_{{\rm{disp}}}﹩, derived from the whole cloud velocity dispersion, see Column (5) in Table 1). Bottom middle: pixel-by-pixel line width distributions for ¹²CO (light blue), ¹³CO (red), and opacity-corrected ¹²CO in ¹³CO-dark regions (dark blue). The number of data points from ¹³CO-bright regions in each bin is scaled by a factor of 10 relative to the original count. Bottom right: brightness temperature distributions of ¹²CO in ¹³CO-dark regions (purple), and ¹²CO in ¹³CO-bright regions (orange), and ¹³CO (red).