Estimated contributions of multiple scattering (green curve) and single scattering (blue) to the CE-4 measured phase curve (red dots) by approximating a single scattering by Eq. (B.1). The single-scattering parameters used (K = 1.0, ϖ₀ = 0.11, b = 0.35, c = −0.22, = 30.4°) were obtained from Step 2, Fig. B.4j. The multiple scattering is calculated by subtracting single scattering from the CE-4 measurement.