Disk-integrated spectrum recorded by TEXES on February 26, 2014, between 529.24 and 529.345 cm^-1 (19 μm), showing weak transitions of CO₂ and SO₂. The date and duration of the corresponding observation are indicated in Table 2. The February 2014 run corresponds to the weakest SO₂ content measured at the cloupdtop between 2012 and 2016. Thick black line: TEXES data; thin lines: models. Green: SO₂ = 0 ppbv; red (best fit): SO₂ = 30 ppbv with cutoff; blue: SO₂ = 60 ppbv with cutoff; black: SO₂ = 8 ppbv, constant with altitude. The quality of the fit is limited by the uncertainty on the continuum curvature and the weakness of the SO₂ band. The spectral resolution is 0.010 cm^-1.