Position-velocity plot of the methanol 2_k  →  1_k lines, cutting along the PA = 96° on the map shown in the middle bottom panel of Fig. 4. We show the transitions: 2_-1  →  1_-1E, 2₀  →  1₀A, and 2₁  →  1₁E. The offset is measured in a positive direction toward east and from the pointing center of the observations. First contour is 0.018 in steps of 0.036 Jy beam^-1, the dashed contours show the negative emission (− 0.018 Jy beam^-1).