H i  brightness temperature images for selected velocity ranges. The velocity range covered by each map is 2.47 km s^-1, and the displayed temperatures are a mean over the entire velocity map velocity width. The central velocity of each image is given in the upper left corner. The beam size is shown as a circle in the upper right corner of the entire figure. A constant mean brightness temperature value was subtracted from each image (see text). The lowest temperature contour is  − 21 K and the contour spacing is 7 K.