Velocity channel maps of the H i emission in SNR G46.8–0.3 from VGPS spectral line data overplotted with the THOR+VGPS contours (levels: 70, 120, and 150 mJy beam⁻¹) of the radio continuum radiation from the remnant and the H ii region G046.495–00.241. For comparison, the radio continuum image was smoothed to the 60′′ spatial resolution of the H i data. Before constructing the maps presented in the figure, an appropriate mean background level was subtracted from each H i velocity channel. The integration velocity range is indicated in the bottom left corner of each panel. All the velocity ranges are displayed with the linear colour scale in units of K km s⁻¹ shown in panel a.