Fitting results of one/two velocity components. Upper row: Fitted centroid velocity maps from the one-component fitting (left), and that of the main and secondary component from the two-component fitting (middle, right). The red crosses mark the six ALMA 870 μm cores A-F, as in Figure. 1. Across the entire clump, which is well fitted by a single component, only a tiny portion around core A can be properly fitted with two-component fitting. Middle row: One velocity component fitting. NH₃ (1,1) and (2,2) spectra (black) extracted from the peak of core A, overlaid with fitting results (red) and residuals. Fitted parameters are labeled on the spectra plots. Bottom row: Same as the middle row, but for a two-velocity-component fitting.