The dependence of the parallel and perpendicular MFPs (left and middle columns, respectively) as well as the ratio λ_∥/λ_⊥ (right column) on proton kinetic energy. Turbulence levels of (δB/B₀) = 0.48, 1.0, and 1.3 correspond to the top, middle, and bottom rows. For all panels shown, three different values are considered for the compressibility ﹩{(\delta {B}_{z}/\delta B)}^{2}﹩: 0.25, 0.75, and 0.95.