Two-component fit of the line spectral energy distribution of the (from left to right) CO, HCN, and HCO⁺ species, for the (from top to bottom) spectra at offset position (−65′′, +31′′) toward the peak of the HCN J = 8 → 7 intensity, (−40′′, +18′′) toward the peak of the ¹²CO J = 16 → 15 intensity, (−60′′, −30′′) toward the PDR, and (−130′′, +30′′) toward the molecular gas in M17 SW. The fit of the ¹³C bearing isotopologues is shown in the insets. The cold and warm components are shown in dotted and dashed lines, respectively. The error bars are as in Fig. 9.