Top: spectrum of the toroidal magnetic energy (blue) and the poloidal magnetic energy (red) normalized by the total magnetic energy as a function of the spherical harmonics order l. The dotted lines correspond to the axisymmetric components of these energies. Bottom: spectrum of the toroidal kinetic energy (blue) and the poloidal kinetic energy (red) normalized by the total kinetic energy as a function of the spherical harmonics order l. The dotted lines correspond to the axisymmetric components. The black dashed line corresponds to a scaling of l⁻¹.