The variation of MFPs with the compressibility ﹩{(\delta {B}_{z}/\delta B)}^{2}﹩. Left, center, and right columns correspond to λ_∥, λ_⊥, and λ_∥/λ_⊥, respectively, while rows correspond to different values for the turbulence level (δB/B₀): 0.48, 1.0, and 1.3 from top to bottom. The particle energies considered in Figure 8 are here represented by different colors.