| Average DBH (cm) | Minimum DBH | Maximum DBH | Average error | R | RMSE | |
Field data | Average | 25.8 | 18.6 | 34.3 |
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Minimum | 24.6 | 13.0 | 30.0 |
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Maximum | 27.3 | 22.0 | 39.0 |
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Regression formula 1 | Average | 24.8 | 19.8 | 32.3 | 8.73% | 0.825 | 2.731 |
Minimum | 23.6 | 15.8 | 27.3 | 6.10% | 0.633 | 1.760 | |
Maximum | 26.1 | 22.2 | 40.7 | 11.37% | 0.942 | 3.805 | |
Regression formula 2 | Average | 24.5 | 20.7 | 30.3 | 10.83% | 0.656 | 3.357 |
Minimum | 23.6 | 18.0 | 27.6 | 8.54% | 0.129 | 2.632 | |
Maximum | 25.3 | 22.0 | 34.0 | 13.31% | 0.898 | 4.377 | |
Regression formula 3 | Average | 23.9 | 19.9 | 30.2 | 11.25% | 0.697 | 3.489 |
Minimum | 22.9 | 16.7 | 26.8 | 9.12% | 0.215 | 2.421 | |
Maximum | 24.7 | 21.4 | 34.0 | 13.67% | 0.908 | 4.593 | |
Regression formula 4 | Average | 24.9 | 18.9 | 31.8 | 7.37% | 0.870 | 2.420 |
Minimum | 23.8 | 15.1 | 28.5 | 5.59% | 0.786 | 1.659 | |
Maximum | 25.9 | 21.8 | 36.5 | 9.51% | 0.953 | 3.740 | |
Regression formula 5 | Average | 24.7 | 19.2 | 31.1 | 7.82% | 0.842 | 2.631 |
Minimum | 23.7 | 15.4 | 28.2 | 5.19% | 0.689 | 1.854 | |
Maximum | 25.8 | 21.4 | 33.5 | 10.30% | 0.955 | 3.967 | |
Regression formula 6 | Average | 24.2 | 18.8 | 30.6 | 8.30% | 0.855 | 2.779 |
Minimum | 23.3 | 14.8 | 27.4 | 5.57% | 0.707 | 2.034 | |
Maximum | 25.2 | 21.1 | 32.7 | 11.70% | 0.961 | 4.146 | |
Regression formula 7 | Average | 24.8 | 19.9 | 32.3 | 8.84% | 0.822 | 2.753 |
Minimum | 23.5 | 15.8 | 27.3 | 6.22% | 0.616 | 1.780 | |
Maximum | 26.0 | 22.1 | 40.6 | 11.43% | 0.940 | 3.811 | |
Regression formula 8 | Average | 24.8 | 19.8 | 32.1 | 8.59% | 0.831 | 2.696 |
Minimum | 23.6 | 15.9 | 27.4 | 5.68% | 0.673 | 1.720 | |
Maximum | 26.3 | 22.2 | 40.5 | 11.90% | 0.947 | 3.791 | |
Regression formula 9 | Average | 24.8 | 18.9 | 31.8 | 7.32% | 0.877 | 2.402 |
Minimum | 23.8 | 14.8 | 28.2 | 5.53% | 0.776 | 1.651 | |
Maximum | 25.5 | 21.6 | 35.5 | 9.32% | 0.948 | 3.659 | |
Regression formula 10 | Average | 24.8 | 18.9 | 31.8 | 7.31% | 0.877 | 2.404 |
Minimum | 23.7 | 14.8 | 28.1 | 5.52% | 0.776 | 1.636 | |
Maximum | 25.5 | 21.6 | 35.5 | 9.14% | 0.948 | 3.702 |