Breakdown of the contributions from the k_y = 0 and k_y ≠ 0 components to the Reynolds and Maxwell stresses. (a,b) Volume-averaged Reynolds stress, ${\overline{\mathcal{R}}}_{\mathit{xz}}$, as a function of Co_* from the HD and MHD simulations. Yellow and purple colors correspond to ${\overline{\mathcal{R}}}_{\mathit{xz}}^{k_y=0}$ and ${\overline{\mathcal{R}}}_{\mathit{xz}}^{k_y\ne 0}$, respectively. (c) Volume-averaged Maxwell stress, ${\overline{\mathcal{M}}}_{\mathit{xz}}$, from MHD simulations.