CO(1–0) spectrum obtained by spatially integrating the emission over the disk of NGC 1614. We show the three individual Gaussian components fitted to the spectrum (gray curves) and the implied overall fit combining them (red curve) (left panel). A close-up view of the overall fit to the spectrum is shown in the middle panel to highlight emission from the line wings. Residuals and associated Gaussian fits are shown in the right panel with the typical 1σ level indicated by the dotted line.