Channel maps of ¹²CO(1–0) and ¹³CO(1–0) lines. The green and magenta contours display the distribution of the integrated intensity ¹²CO(1–0) and ¹³CO(1–0) lines, respectively, in the interval velocity range of 0.6 km s⁻¹. The levels of green contours are from 6σ (~1.2 K km s⁻¹) to the peak value by intervals of 6σ. The levels of magenta contours are from 3σ (~0.6 K km s⁻¹) to the peak value by intervals of 3σ.