Table 1: Results of different procedures of interloper removal in terms of the fraction of removed interlopers $f_{\rm i}$, the fraction of halo particles incorrectly identified as interlopers $f_{\rm g}$ and the fraction of non-identified interlopers remaining in the final sample of halo members $f_{\rm h}$. The table lists both the mean values $\langle f\rangle$ and the dispersions $\sigma _{\rm f}$ of the parameters obtained in the analysis of 30 mock velocity diagrams. For all seven methods of interloper removal considered in Sect. 3 results are quantified for three different definitions of interlopers, particles beyond $r_{\rm v}$ or $2r_{\rm v}$and unbound particles, as marked in the second column (interloper type - i/t) by $r_{\rm v}$, $2r_{\rm v}$ and $v_{\rm esc}$ respectively.
Method i/t $\langle f_{\rm i}\rangle$ $\sigma_{f_{\rm i}}$ $\langle f_{\rm g}\rangle$ $\sigma_{f_{\rm g}}$ $\langle f_{\rm h}\rangle$ $\sigma_{f_{\rm h}}$
$v_{\rm max}(1)$ $r_{\rm v}$ 23 17 1.1 1.5 19.7 8.7
  $2r_{\rm v}$ 48 26 1.1 1.4 7.7 7.8
  $v_{\rm esc}$ 73 23 1.0 1.4 2.4 4.0
$v_{\rm max}(2)$ $r_{\rm v}$ 13 11 0.0 0.0 21.9 9.4
  $2r_{\rm v}$ 30 22 0.0 0.0 10.2 9.0
  $v_{\rm esc}$ 48 29 0.0 0.0 5.2 6.5
$3\sigma_{\rm los}(5)$ $r_{\rm v}$ 17 9 0.9 1.4 21.3 8.9
  $2r_{\rm v}$ 37 21 0.8 1.2 9.4 8.3
  $v_{\rm esc}$ 58 27 0.7 1.0 4.3 5.3
$3\sigma_{\rm los}(10)$ $r_{\rm v}$ 19 10 1.6 2.4 21.0 8.8
  $2r_{\rm v}$ 40 22 1.5 2.4 9.1 8.3
  $v_{\rm esc}$ 63 27 1.4 2.2 3.9 5.1
$3\sigma _{\rm los}(R)$ $r_{\rm v}$ 19 17 0.2 0.5 20.4 9.2
  $2r_{\rm v}$ 40 25 0.2 0.4 8.6 8.4
  $v_{\rm esc}$ 61 28 0.2 0.3 3.4 4.4
$v_{\rm lim}$ $r_{\rm v}$ 19 17 0.3 0.5 20.4 9.2
  $2r_{\rm v}$ 41 25 0.3 0.5 8.5 8.3
  $v_{\rm esc}$ 62 27 0.3 0.4 3.4 4.4
$M_{\rm P}/M_{\rm VT}$ $r_{\rm v}$ 18 7 1.2 1.2 21.1 8.9
  $2r_{\rm v}$ 40 22 1.2 1.3 9.3 8.3
  $v_{\rm esc}$ 65 26 1.2 1.2 4.1 5.8


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