Table 1.

Simulation results of accuracy of fitted second layer properties. The first layer properties are the true values given in the first column.

First layer (${\mathrm{cm}}^{-1}$)	Second layer (${\mathrm{cm}}^{-1}$)
		1. ${\mu }_a=0.1$, ${\mu }_s^{\prime }=6.0$	2. ${\mu }_a=0.2$, ${\mu }_s^{\prime }=6.0$
1. ${\mu }_a=0.02$, ${\mu }_s^{\prime }=4.0$	${\mu }_a$${\mu }_s^{\prime }$	97.9% 76.3%	85.0% 63.2%
2. ${\mu }_a=0.05$, ${\mu }_s^{\prime }=6.0$	${\mu }_a$${\mu }_s^{\prime }$	97.5% 93.4%	86.3% 66.1%
3. ${\mu }_a=0.05$, ${\mu }_s^{\prime }=9.0$	${\mu }_a$${\mu }_s^{\prime }$	90.0% 61.3%	77.7% 43.4%