Average single tree volume (m³)

Minimum volume

Maximum volume

Average error

R

RMSE

Field data

Average

0.36

0.09

0.82

Minimum

0.31

0.06

0.46

Maximum

0.43

0.15

1.30

Regression

formula 1

Average

0.31

0.10

0.67

19.23%

0.917

0.090

Minimum

0.26

0.05

0.37

10.05%

0.808

0.047

Maximum

0.36

0.16

1.00

27.89%

0.977

0.160

Regression

formula 2

Average

0.28

0.13

0.53

25.28%

0.849

0.137

Minimum

0.25

0.09

0.34

19.88%

0.684

0.070

Maximum

0.33

0.18

0.88

39.85%

0.953

0.247

Regression

formula 3

Average

0.27

0.12

0.51

26.34%

0.855

0.144

Minimum

0.24

0.08

0.32

20.19%

0.677

0.081

Maximum

0.31

0.17

0.83

41.72%

0.959

0.251

Regression

formula 4

Average

0.31

0.09

0.67

19.11%

0.911

0.091

Minimum

0.27

0.05

0.40

10.05%

0.808

0.047

Maximum

0.36

0.16

1.00

27.89%

0.955

0.160

Regression

formula 5

Average

0.31

0.09

0.65

19.98%

0.903

0.097

Minimum

0.28

0.05

0.47

11.26%

0.774

0.051

Maximum

0.36

0.15

0.94

29.68%

0.958

0.176

Regression

formula 6

Average

0.30

0.09

0.63

20.58%

0.906

0.101

Minimum

0.27

0.04

0.44

11.89%

0.778

0.054

Maximum

0.35

0.15

0.93

30.45%

0.962

0.183

Regression

formula 7

Average

0.32

0.12

0.66

20.21%

0.886

0.100

Minimum

0.26

0.08

0.40

11.19%

0.724

0.061

Maximum

0.37

0.20

0.91

32.57%

0.974

0.178

Regression

formula 8

Average

0.32

0.11

0.68

19.84%

0.892

0.096

Minimum

0.27

0.06

0.42

12.29%

0.777

0.061

Maximum

0.37

0.19

0.97

29.00%

0.957

0.161

Regression

formula 9

Average

0.31

0.09

0.67

19.18%

0.912

0.092

Minimum

0.27

0.05

0.41

9.81%

0.800

0.046

Maximum

0.36

0.15

1.00

28.38%

0.959

0.162

Regression

formula 10

Average

0.31

0.09

0.67

19.16%

0.912

0.092

Minimum

0.27

0.05

0.41

9.82%

0.800

0.046

Maximum

0.36

0.15

0.99

28.28%

0.960

0.162