H i data cube channel maps showing the H i distribution for a certain heliocentric velocity interval. Each panel is created out of three velocity slices, corresponding to a velocity interval of ~5 km s^-1 from top left to bottom right. The upper left panel starts with a mean heliocentric velocity of ~233 km s^-1, the last panel in the lower right with ~327 km s^-1. The dashed black circle marks the position of the SNR, while the dashed white circle corresponds to the Hα cavity. Each image shows an area of , which is also indicated by the box in Fig. 8. Scales represent the brightness temperature and are in kelvin.