Figure 4.

Estimates of the reflectance as for n₁ = 1.4, d₁ between 15 and 150 μm, μ_{a, 1} between 0.10 and 2.00 mm⁻¹, ${\mu }_{\mathrm{s},1}^{\prime }$ equaling 1 mm⁻¹, μ_{a, 2} between 0.01 and 0.20 mm⁻¹, and ${\mu }_{\mathrm{s},2}^{\prime }$ between 0.50 and 2.00 mm⁻¹, and f_x equaling (a) 0.00 mm⁻¹ and (b) 0.21 mm⁻¹ predicted by Monte Carlo simulations and the trained neural network for the validation set.