Radial profiles of the velocity for different PAs θ, spaced by 45°, where θ is the angle starting from the northern major axis and rotating counterclockwise. The red curve isthe velocity measured using the intensity weighted method (mom1 in CASA) with ¹³CO J = 3–2. The orange and blue curves correspond to the velocity measured using the peak emission method with the ¹³CO J = 3–2 and C¹⁸O J = 3–2 transition lines, respectively, with the procedure detailed in Teague & Foreman-Mackey (2018).