Table 2: The values for $R_{\rm cusp}$ taken from Keeton et al. (2003) for four lens systems showing a typical cusp geometry.

Lens
$R_{\rm cusp}$

B2045+265
$0.52 \pm 0.04$
B0712+472 $0.26\pm 0.06$
RX J0911+0551 $0.22\pm 0.06$
B1422+231 $0.18 \pm 0.06$


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