Flux and polarization spectra for different magnetospheric plasma temperatures in the full model. The parameters are as follows: B_p = 5 × 10¹³ G, R = 10 km, kT_s = 0.6 keV, θ = 35°, ξ_τ = 0.8, β₀ = 0.5, and a hot spot at (θ_s, ϕ_s) = (53°, 37°). Results are shown for kT_e = 30, 100, and 200 keV, and are compared with the unscattered and single-velocity cases.