Magnetic field power spectral densities at t ∼ 494 for the magnetic field component within the x–y plane (blue line), and for the out-of-plane magnetic field component (orange line). The Kolmogorov-like trend for wavenumbers smaller than the one corresponding to the ion scale is also shown (green dashed line), as well as a k^−2.8 power law at higher wavenumbers (red dashed line) to guide the eye.