Maps showing , where v_HI are the H I line-of-sight velocities and are the resolution matched and re-projected H II line-of-sight velocities. The left panel shows the comparison with the untapered VLA-B configuration data, i.e. the subtraction of the velocity field in the lower-right panel of Fig. 14 from the upper-left panel of Fig. 14, while the right panel shows the comparison for the 7 kλ-tapered data, i.e. the subtraction of the velocity field in the lower panel of Fig. 15 from the upper panel of Fig. 15.