Residue

^(†)W_r

k₁

W_d

k₂

R²

P. taeda needles

84.7

−0.0001

15.3

−0.0235

0.99

P. taeda twigs

90.4

−0.0001

9.5

−0.0228

0.99

E. grandis leaves

79.5

−0.0001

20.9

−0.0243

0.99

E. grandis bark

92.2

−0.0002

7.6

−0.0217

0.99

E. grandis twigs

90.2

−0.0003

9.6

−0.0210

0.99

E. globulus leaves

79.9

−0.0001

19.7

−0.0179

0.99

E. globulus bark

94.6

−0.0002

5.3

−0.0276

0.99

E. globulus twigs

91.7

−0.0002

9.0

−0.0159

0.99

E. dunnii leaves

78.8

−0.0001

21.2

−0.0181

0.99

E. dunnii bark

93.2

−0.0002

6.9

−0.0238

0.99

E. dunnii twigs

90.5

−0.0003

9.2

−0.0191

0.99