Integrated emission line for the different gas tracers observed with ALMA, convolved to the spatial resolution of ¹³CO(1−0). The size of the synthesized beam is shown in the bottom left corner of the first panel. The emission for all tracers is integrated between 650 and 685 km s⁻¹; the color bars are in units of K km s⁻¹. The white contours in the first panel (black contours in the other panels) correspond to 15σ, 25σ, 50σ, and 100σ, with σ = 1.01 K km s⁻¹ of the CO(2–1) line. Offset positions are from the galactic center.