Sets of 1200 rays plotted as as unispheres parameterized by (θ, ϕ) = (θ₀, α) for the model 2A with B_cen = B_crit, cen, ω = 10 ω_dyn, and l = 1. Trapped rays are shown as blue dots, reflected rays are shown as red diamonds, and unclassified rays are shown as gray squares. In the top row, we show rays for which we have used a Newton-Raphson iteration scheme for the correction of k_r, which was used by Loi (2020a). In the bottom row, we show rays where we have used our method described in Sect. 2.4 to correct k_r. In the left column, we employed the ray classification scheme of Loi (2020a) to decide whether a ray is trapped, reflected, or unclassified. In the right column, we used our ray classification scheme described in Appendix A.4. The trapped fraction f_T of each set is indicated under its corresponding unisphere.