Figure 3

Predicted versus measured values of glucan, xylan, and lignin for the 25 external validation samples. The x-axis represents constituent values obtained from primary methods measured on a percent dry weight basis (wt%). The y-axis represents values for composition obtained by prediction form the PLS-2 calibration equation. Ash is not pictured here for ease of visibility. The external validation samples were not used to build the calibration model.