ALMA band 7 spectra of V1309 Sco. The reference frame is LSR. Black shows the 2016 spectrum, and blue shows the 2019 spectrum. The key lines are indicated by the labels. Red vertical lines indicate the position of the multiple identified SO₂ lines shifted to the observed positions. The 2019 spectrum was extracted from data smoothed to the same beam size as the 2016 data. Both spectra represent the entire source. Both spectra are smoothed.