Time-averaged turbulent transport coefficients from the unstratified, zero net-flux cases, with the standard box size cases (L = [1.0, π, 1.0], n_x = 96) to the left and the tall box cases (L = [1.0, π, 4.0], n_x = 48) to the right. The circles represent the simulations where we have adjusted the strength of the artificial resistivity, while the star symbols represent the simulations where we have adjusted the artificial viscosity. To minimize noise we have set α_xx = α_yy, η_xx = η_yy, α_yx = 0.0 and η_xy = 0.0. We can see that the α coefficients have values of around zero as expected for the unstratified case and η_xx with a consistent positive value. For the standard box η_yx remain close to zero while for the tall box we see a consistent positive value which is contrary to what was seen by Shi et al. (2016).