P-V diagrams of the ¹³CO J = 2–1 transition derived from the modeling (upper panels) and observations (lower panels). The left panels present the velocity structure along the major axis of the EE, oriented from NW to SE, where negative offsets indicate the NW direction. The right panels show the velocity structure along the minor axis, oriented from SW to NE, with negative offsets corresponding to the SW direction. The cuts we used to extract these diagrams are detailed in Fig. 4.