Average single tree volume (m³)

Minimum volume

Maximum volume

Average error

R

RMSE

Field data

Average

0.53

0.20

0.94

Minimum

0.47

0.10

0.78

Maximum

0.59

0.28

1.20

Regression

formula 1

Average

0.48

0.23

0.84

15.80%

0.907

0.101

Minimum

0.43

0.13

0.68

9.53%

0.842

0.056

Maximum

0.54

0.32

1.02

22.19%

0.983

0.170

Regression

formula 2

Average

0.45

0.25

0.74

18.80%

0.879

0.128

Minimum

0.42

0.16

0.59

14.91%

0.734

0.088

Maximum

0.50

0.32

0.87

23.83%

0.967

0.198

Regression

formula 3

Average

0.44

0.24

0.73

19.54%

0.889

0.134

Minimum

0.40

0.14

0.57

15.77%

0.765

0.087

Maximum

0.48

0.31

0.86

25.03%

0.966

0.206

Regression

formula 4

Average

0.49

0.20

0.88

14.89%

0.901

0.103

Minimum

0.44

0.12

0.73

9.29%

0.825

0.057

Maximum

0.53

0.27

1.13

19.83%

0.965

0.173

Regression

formula 5

Average

0.47

0.19

0.87

15.83%

0.897

0.105

Minimum

0.43

0.12

0.68

12.64%

0.813

0.086

Maximum

0.54

0.28

1.10

20.54%

0.954

0.151

Regression

formula 6

Average

0.46

0.19

0.84

17.18%

0.892

0.118

Minimum

0.42

0.11

0.67

13.48%

0.789

0.090

Maximum

0.52

0.27

1.06

22.45%

0.964

0.193

Regression

formula 7

Average

0.48

0.23

0.84

15.91%

0.908

0.102

Minimum

0.43

0.13

0.67

9.79%

0.842

0.052

Maximum

0.53

0.32

1.02

22.33%

0.983

0.170

Regression

formula 8

Average

0.49

0.22

0.85

15.87%

0.902

0.102

Minimum

0.44

0.13

0.70

9.24%

0.841

0.060

Maximum

0.54

0.31

1.04

22.24%

0.980

0.169

Regression

formula 9

Average

0.49

0.20

0.89

14.90%

0.905

0.102

Minimum

0.44

0.11

0.71

9.46%

0.825

0.054

Maximum

0.54

0.28

1.12

19.50%

0.971

0.172

Regression

formula 10

Average

0.48

0.20

0.88

14.91%

0.905

0.102

Minimum

0.43

0.11

0.70

9.50%

0.825

0.054

Maximum

0.54

0.28

1.12

19.81%

0.971

0.174