Time evolution of several volume-averaged quantities for the tall box, unstratified ZNF cases at a resolution of n_x = 48: magnetic energy (top left), kinetic energy (top right), normalized Maxwell stress (bottom left) and the total stress (bottom right). The red line show the case of P_m, AR = 3.0 where we set the Prandtl number by altering the AR strength. The green lines show the case where we set the Prandtl number by altering the AV strength, the darkness of the curve is determined by the value of the set Prandtl number, P_m, AV = [0.25, 3.0, 6.0]. The blue curves represent the cases with a set AR coefficient without forcing the Prandtl number, where the darkness is determined by the strength of the artificial resistivity parameter, α_B = [0.25, 0.5, 1.0, 2.0, 4.0]. Four of the nine cases reach a saturated state (α_B = 0.25, P_m, AR = 3.0, P_m, AV = 3.0, P_m, AV = 6.0). The code default value of α_B = 0.5 sustains turbulence for a long time but starts to decay after around 120 orbits.