[CI] = ³P₁ − ³P₀ line emission channel maps observed in HD163296. Each panel has dimensions of 9.64” × 9.64” and, at the bottom left, is labeled by its velocity relative to the rest frequency of the [CI] line. At the top left, the peak S/N is shown. The panel of 7.0 km s⁻¹ shows the synthesized beam FWHM with a white ellipse. The enclosed region in the panel of 5.5 km s⁻¹, labeled by the letter A, highlights an asymmetry feature in the emission.