Integrated intensity maps (or zeroth-order moment maps) of the observational (left column) and simulated (middle column) data for the CH₃CN J = 13−12, K = 0, 1 transitions of the isotopologue ¹³CH₃CN. The panels in the right column show the difference between the observational and the simulated data. The central row shows the entire Sgr B2(M) complex except for the central region, which is masked out with a transparent, hatched area. The green and magenta boxes indicate the zoomed-in regions that are depicted in the top row (northern part of Sgr B2(M)) and the bottom row (southern part of Sgr B2(M)). As in the previous figures, the black numbers indicate the position of the dust cores, whereas the green and magenta crosses depict the position of the molecular centers (see Table A.1).