Top: Alvén speed in code units versus the radius, where φ = 0. Solid lines are the midplane values (θ ≈ π/2) while dashed lines are closer to the pole (θ ≈ π/3). The lighter the color, the later the snapshot. The dotted black line is the Alvén cap V_A = V_A, maxr where V_A, max = 1 u.c.. Bottom: Ambipolar (solid) and Ohmic (dashed) diffusions versus the radius. Color coding and dotted black line are the same as for the top panel, with the diffusivity cap η = η₀r² where η₀ ≈ 7.1 × 10¹⁸ cm² s⁻¹.