Parameter map of the omitted region G13.90 mapped with the Nobeyama 45 m telescope. The left panel shows the PACS 70 μm maps with the PACS point sources detected by Ragan et al. (2012a) indicated by red circles, the blue numbers refer to the submm continuum peaks as given in Table 3. The second panel displays the N₂H⁺ column density derived from fitting the full N₂H⁺ hyperfine structure. The third and fourth panels show the corresponding velocity and linewidth (FWHM) of each fit. The contours from ATLASGAL 870 μm are plotted with the lowest level representing 0.31 Jy, and continue in steps of 0.3 Jy.