Same as Figure 3, but for Run D: k _f/ k ₁ = 20, Re = 9, Re _M = 7.9, and Sh = 0.016. The domain for this run is π/2 × π/2 × 2π, and the helicity in the top panel has been multiplied by 10 to achieve dynamic color range. The vertical bars in the first panel denote the time interval over which the functions in the other three panels are averaged.