Moment 0 maps for some CH₃OCHO transitions. The contours start at 4σ at every 2σ (1σ = 11.7, 16.7, and 8.3 mJy beam⁻¹ km s⁻¹ at 233.8, 234.1, and 247.5 GHz, respectively). The ellipses in the bottom left corners represent the ALMA synthesised beams. Sources A and B are indicated as filled white circles in the top and middle panels. The dust continuum map from Alves et al. (2019) is shown in white contours in the bottom panel.