SiO and CH₃OH PV diagrams extracted from different paths. Left: PV Diagram extracted over the path of ∼7″ in length that follows the SiO structures (white in Figure D.1). The SiO emission is shown in colour scale. Green and white contours at (3,5,10) σ are for CH₃OH (σ ∼ 2 mJy beam⁻¹) and SiO (σ_m∼1.6 mJy beam⁻¹), respectively. Right PV diagram extracted over the region of 3″ in length passing through methanol and SiO PA in the inner $0\stackrel{″}{.}5$ (shown in red in the left panel). The methanol emission is shown in colour scale with green contours (at 3,5,10 σ_m with σ_m∼3 mJy beam⁻¹). The SiO emission is shown in white contours at (3,5,10, 20) σ_s with σ_s∼1.5 mJy beam⁻¹. In both panels, the vertical and horizontal dashed lines represent the v_sys (∼6.8 km s⁻¹; Choi 2001), and the 0″ offset (on the 4A2 protostar), respectively.