Normalized parallel (top) and transverse (bottom) shift regions of equatorial rings with ﹩{r}_{s}/{r}_{g}\,\in \,\left[2,10\right]﹩ (combined pink and blue) and with ﹩{r}_{s}/{r}_{g}\,\in \,\left[2,5\right]﹩ (blue only), viewed at θ_o  =  17^∘, as a function of spin alongside the corresponding best-fit mean values (Equation (3) and Equation (4); dashed lines).