Spectra from spectral window number 2, taken at the position of Oph-IRS67B (top) and Oph-IRS67A (bottom), and rebinned by a factor of 4. Blue lines show the rest frequency of SO₂ transitions. Green and red lines indicate the rest frequency of CH₃OH transitions with upper energy levels (E_u) below and above 100 K, respectively. The purple dashed line shows the value of 1σ (σ = 4 mJy beam⁻¹ per channel).