Mosaic of Hi mean brightness temperature in selected velocity ranges within −33 to −16 km s^-1. Each image is a mean of three individual images. The central velocity of each image is indicated at the inner top right-hand corner. The filled circle drawn in the upper left-hand corner of the Hi image at −32 km s^-1 indicates the angular resolution of the Hi data. The lowest and highest contours are 15 K and 105 K, respectively, while the contour spacing is 5 K until 50 K and 15 K from there onwards. The dark grey areas represent regions with high Hi emissivity.