H i absorption (Morganti et al. 2005), H₂ S(1) 17 μm emission (Dasyra & Combes 2011), and Gaussian fit of the ¹²CO(2-1) emission of 3C 236. For comparison, the spectra are normalized and the H i absorption is shown inverted. The red vertical line marks the . Top panel: comparison of the CO emission (red, dashed line) and H i absorption. The black line shows the integrated H i absorption spectrum of 3C 236. The three components of the fit to the H i spectrum are represented with blue lines. Bottom panel: comparison of the CO emission (red, dashed line), H₂ S(1) 17 μm emission (green line), and the H i intermediate width component (blue line). The horizontal green line shows the FWHM of the H₂ S(1) 17 μm line, corrected for instrumental broadening.