Herschel/PACS continuum-subtracted spectra of IRAS 07251−0248 around 119, 79, and 65 μm (filled histograms), and model fit. The upper scale in each panel is velocity in km s⁻¹ relative to the blue component of each OH doublet, and the two vertical dotted lines indicate the positions of the two OH l−doubling components (rest wavelengths are calculated for a redshift z = 0.08778). The contribution to the modeled spectrum by different species and components is shown with different colors as labeled in panel (a); red is total.