| Average DBH (cm) | Minimum DBH | Maximum DBH | Average error | R | RMSE | |
Field data | Average | 22.0 | 14.2 | 30.6 |
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Minimum | 20.2 | 12.0 | 24.0 |
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Maximum | 23.5 | 16.0 | 37.0 |
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Regression formula 1 | Average | 21.0 | 15.1 | 28.1 | 9.19% | 0.856 | 2.554 |
Minimum | 19.6 | 12.4 | 23.8 | 6.28% | 0.765 | 1.660 | |
Maximum | 22.1 | 17.9 | 32.0 | 11.92% | 0.977 | 3.392 | |
Regression formula 2 | Average | 20.6 | 17.6 | 26.3 | 13.85% | 0.581 | 3.848 |
Minimum | 19.7 | 15.9 | 21.6 | 10.72% | 0.097 | 3.001 | |
Maximum | 22.2 | 18.6 | 33.5 | 16.50% | 0.896 | 4.927 | |
Regression formula 3 | Average | 20.0 | 16.7 | 25.7 | 14.53% | 0.601 | 4.004 |
Minimum | 19.0 | 14.8 | 21.1 | 10.50% | 0.131 | 2.987 | |
Maximum | 21.5 | 17.9 | 32.4 | 17.81% | 0.902 | 5.163 | |
Regression formula 4 | Average | 21.1 | 14.6 | 28.1 | 8.44% | 0.866 | 2.428 |
Minimum | 20.0 | 12.4 | 23.3 | 3.74% | 0.765 | 0.979 | |
Maximum | 22.1 | 17.9 | 32.0 | 11.92% | 0.973 | 3.392 | |
Regression formula 5 | Average | 21.1 | 14.6 | 27.6 | 8.77% | 0.860 | 2.509 |
Minimum | 20.3 | 12.4 | 23.9 | 5.44% | 0.767 | 1.285 | |
Maximum | 22.1 | 17.3 | 32.8 | 12.45% | 0.946 | 3.550 | |
Regression formula 6 | Average | 20.8 | 14.4 | 27.2 | 9.01% | 0.864 | 2.602 |
Minimum | 20.0 | 12.0 | 23.0 | 5.12% | 0.766 | 1.206 | |
Maximum | 21.7 | 17.1 | 32.2 | 13.12% | 0.957 | 3.653 | |
Regression formula 7 | Average | 21.1 | 16.1 | 28.0 | 10.89% | 0.755 | 3.026 |
Minimum | 19.6 | 14.5 | 23.7 | 6.06% | 0.460 | 1.972 | |
Maximum | 22.3 | 18.3 | 32.6 | 13.97% | 0.977 | 3.954 | |
Regression formula 8 | Average | 21.1 | 15.7 | 28.3 | 9.91% | 0.798 | 2.821 |
Minimum | 19.6 | 13.9 | 23.5 | 6.53% | 0.599 | 1.634 | |
Maximum | 22.3 | 18.7 | 31.5 | 13.04% | 0.961 | 3.647 | |
Regression formula 9 | Average | 21.1 | 14.6 | 28.0 | 8.41% | 0.867 | 2.424 |
Minimum | 20.1 | 12.4 | 23.3 | 3.95% | 0.765 | 0.960 | |
Maximum | 22.1 | 17.8 | 32.5 | 11.94% | 0.975 | 3.396 | |
Regression formula 10 | Average | 21.1 | 14.6 | 28.0 | 8.40% | 0.867 | 2.420 |
Minimum | 20.1 | 12.4 | 23.3 | 3.97% | 0.766 | 0.963 | |
Maximum | 22.1 | 17.8 | 32.5 | 11.99% | 0.975 | 3.404 |