Additional descriptors derived from the parameterized scattering phase matrix elements a₁ and b₁ for selected materials: the asymmetry parameter, g₁₁, versus the forward-scattering exponent, δ₁ (top left), the backward-scattering exponent, ρ₁, versus δ₁ (top right), the polarization asymmetry parameter, g₁₂, versus the polarizing efficiency, N₁₂ (bottom left), and the minimum degree of linear polarization, -b_1r↓, versus the corresponding maximum, -b_1r↑ (bottom right).