Same as Fig. 5 but for the 281 M81-group-like halos. From all 5938 subhalos out to 1.5 r₀, 125 have a perpendicular velocity compatible with zero, 5427 have one that is larger than their line-of-sight velocity. For the bound subhalos, the numbers are 114 and 1925 out of 2099, respectively. 132 out of 5938 subhalos have a tangential velocity compatible with zero, for 5190, the tangential velocity exceeds the absolute value of the radial one. For the bound halos, the numbers are 118 and 1870, respectively.