Spectra at selected positions in 1С 1396A, as marked in Fig. 5 (16″ resolution). The [C II] and [O I] spectral baselines are offset for a better visibility of the individual lines, and the vertical dotted lines are for guidance when comparing the peaks between different lines. [O I] 145 µm spectra are affected by the atmospheric ozone feature at velocities of < −10 km s⁻¹ (see the main text).