Model spectra of the [O I] λ 63.2 µm line (solid dark blue line for a wind and dashed for inflow) and the [O I] λ 145.5 µm line (light blue), for d = 421 pc and a systemic velocity of υ_LSR = 36.0 km s⁻¹. The observed λ 63.2 µm spectrum is shown as a gray-filled histogram underneath. Blue arrows mark the systemic velocities discussed in the main text (solid arrow: our model, υ_LSR = 36kms⁻¹; dashed arrow: υ_LSR = 32.7 kms⁻¹, Montargès et al. 2021). Model spectra for [CII] λ 157.7 μm, [FeII] λ 26.0 µm, and [S I] λ 25.2 µm are overlaid in black, red, and yellow, respectively. The H I λ 21 cm spectrum (cyan) is scaled, for better visibility.