Channel maps for sulfur-bearing species, CH₃OH, and C₂H. Colors and contours have the same meaning as in Fig. 6, except lowest contours: 0.6 K   km   s^-1 for SO 7₈–6₇, 0.4 K   km   s^-1 for SO 8₈–8₇ and 9₈–8₇, 0.6 K   km   s^-1 for CS 7–6, 0.2 K   km   s^-1 for SO₂ 5_3,3–4_2,2, 0.35, 0.6, 0.35 and 0.3 K   km   s^-1 for the four consecutive CH₃OH transitions, and 0.4 K   km   s^-1 for both C₂H transitions.