Same format as Figure 5, but applied to the radial variations of plasma parameters within PSP and SO source alignments. Radial variations are computed as ΔX = X_PSP–X_SO for a given observable X. The polytropic index γ_p, derived from two-point measurements, is compared directly with other varying observables. Because the quantities span different orders of magnitude and are typically related by power laws, logarithmic values of X at PSP and SO are used when computing ΔX (except for X = σ_c). All quantities are averaged or computed over τ_inj.