Two-component fit of the line spectral energy distribution of the CO, HCN, and HCO⁺ species for the average spectra toward M17 SW. The fit of the ¹³C bearing isotopologues are shown in the insets. The cold and warm components are shown in dotted and dashed lines, respectively. The error bars correspond to the 3σ range used to estimate the standard deviation of the excitation parameters, where σ is the flux uncertainty obtained from the Gaussian fit.