N₂H⁺(3−2) spectra toward the three main peaks mm1, mm2, and mm3 with the multiple component hyperfine structure fits shown in green. The fit parameters are presented in Table 4. The bottom spectrum shows a comparison between a single-dish C¹⁸O(2–1) spectrum extracted toward the main peak in gray and an average of the above three N₂H⁺(3−2) spectra (multiplied by 8) in red. The units in the bottom spectra are different for both as marked in the side label.