Velocities estimated for emission lines from Filament F1. No doublets or multiplets are included except [O II] λλ3726,3729. As can be seen, the wavelength calibration is stable across the spectrum. Interestingly, there is a group of lines with LMC redshift, although the majority has a redshift close to ∼ + 120 km s⁻¹ compared to LMC redshift. See Table 3 and text for further details.