Table 6: Number of spectroscopic members ( $N_{\rm g}$ ), value of the $\Delta$ statistic, and the measure of substructuring significance P, for each of the clusters used in the present analysis (see text for details).
Cluster name $N_{\rm g}$ $\Delta$ P

Cl 1040 30 55.11 0.08

Cl 1054-11 48 71.77 0.64

Cl 1054-12 36 108.87 0.14

Cl 1216 67 135.58 0.05

Cl 1232 54 96.57 0.01

**Table 6:** Number of spectroscopic members ( $N_{\rm g}$ ), value of the $\Delta$ statistic, and the measure of substructuring significance P, for each of the clusters used in the present analysis (see text for details).
Cluster name	$N_{\rm g}$	$\Delta$	P
Cl 1040	30	55.11	0.08
Cl 1054-11	48	71.77	0.64
Cl 1054-12	36	108.87	0.14
Cl 1216	67	135.58	0.05
Cl 1232	54	96.57	0.01

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