Reynolds stress (code units) from 3−10 AU averaged over 41 time steps, each step 100 orbits apart beginning with orbit 1000, calculated with different averaging methods. For “mean time” the steady-state , needed to calculate the Reynolds stress at each step, was calculated through averaging over the 41 time steps. For “mean phi” the steady-state velocity was calculated by averaging over the azimuthal direction at each time step. For “equilibrium” is calculated analytically by using the equilibrium Eq. (11) at each step. For the 2D model we used the equilibrium method as well.