Average DBH

(cm)

Minimum DBH

Maximum DBH

Average error

R

RMSE

Field data

Average

25.8

18.6

34.3

Minimum

24.6

13.0

30.0

Maximum

27.3

22.0

39.0

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