Table 3.

Refractive index of PUA-BLK and PUA-GAT samples.

Group	B/G-0/40	B/G-5/35	B/G-10/30	B/G-15/25	B/G-20/20
PUA-BLK	1.490 $\pm$ 0.007	1.492 $\pm$ 0.010	1.496 $\pm$ 0.007	1.493 $\pm$ 0.008	1.495 $\pm$ 0.008
PUA-GAT	1.491 $\pm$ 0.003	1.491 $\pm$ 0.006	1.491 $\pm$ 0.006	1.496 $\pm$ 0.010	1.499 $\pm$ 0.005

P > 0.05, two-way ANOVA.