V_z vs x distributions in phase space and the pitch-angle distributions for B_y/B₀ = 0 (a-first row), 0.1 (b-second row), 1.0 (c-third row), and 1.0 with d = 10 (d-fourth row): in each row, V_z vs x of electrons (blue dots) and protons (red dots) (first column), the pitch-angle distribution of low-energy electrons (second column), the pitch-angle distribution of high-energy electrons (third column), and the pitch-angle distribution of protons (fourth column) are presented from left to right for each individual B_y/B₀ ratio. The current sheet parameters are B₀ = 10⁻³ T, E₀ = 250 V m⁻¹, and d = 1 for (a–c). The magnetic field topology in the reconnection plane is similar to that of Fig. 1.