Four spectral lines of NaCl covered by ALMA. The transitions are given at the top of each column and the extraction apertures to the right of each row. The spectra in the top two (black) rows were extracted for circular apertures (with radii of 800 and 320 mas) centred on the star, while the bottom two rows show spectra extracted for irregular apertures encompassing clumps A and C, respectively. The vertical dashed grey lines indicate υ_LSR = 34 km s⁻¹.