A view of the current sheet at x = L _x /4 at times t = 56 τ _c0 (upper panel) and t = 84.5 τ _c0 (lower panel). The volume rendering (blue color) shows the region with current density J > 0.2  cB ₀/(4πλ _p) (upper panel) and J > 0.12  cB ₀/(4πλ _p) (lower panel). The curves are the magnetic field lines that pass through regions of high parallel electric field E _∥, and thus are actively undergoing reconnection. The fraction of the field line with an enhanced value of E _∥ is rendered in green.