a) (Upper panel) map of [S II] RV from 1-g model fits, analogous to Figs. 16 and 17, with same meaning of symbols. b) (Lower panel) map of [N II] RV (absolute value proportional to circle size) from 2-g model fits. Symbols as in panel a, with the addition of green filled dots indicating the submillimeter clumps found by Tothill et al. (2002). Concentric circles of same color indicate that both RV components have the same sign.