Average DBH (cm)

Minimum DBH

Maximum DBH

Average error

R

RMSE

Field data

Average

22.0

14.2

30.6

Minimum

20.2

12.0

24.0

Maximum

23.5

16.0

37.0

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