Calculated co- and cross-polarized BRDF in the plane of incidence for θi = 45° using (thin lines) the fits to each wavelength separately and (thick lines) the fits to all of the wavelengths simultaneously. The components are (black) s→s, (red) s→p, (green) p→s, and (blue) p→p. The wavelengths are (solid) 351 nm, (dashed) 532 nm, (dash-dot-dot) 633 nm, and (dash-dot) 1064 nm.