A comparison between the position-velocity diagrams of the northeast cloud (from Fig. 5b, but contours start at 1.5 K and then increase in steps of 0.5 K, where 1σ is ~0.15 K) and the west cloud (from Fig. 5d, but contours start at 1.0 K and then increase in steps of 0.5 K, where 1σ is ~0.16 K). Both diagrams could be fitted with an ellipse (yellow dashed curve) with a velocity radius of ~3.2 km s-1. The small rectangle in each panel shows the angular and velocity resolutions in the MWISP 12CO observations.
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