Evaluation of the accuracy of the different models at operational scales.

<p>^a The root mean square error of prediction (RMSEP) indicates the overall accuracy, the R² indicates the precision, and the slope indicates the trueness of the models. The significance of the adjusted-R² was tested with a F test (*** p<0.001, ** p<0.01, * p<0.05, ns = non-significant)</p><p>Evaluation of the accuracy of the different models at operational scales.