Parameter

Value

Standard error

Degrees of freedom

t-value

p-value

f (int)

235.994

16.013

1112

14.738

<0.0001

f (pH)

−112.423

9.726

1112

−11.560

<0.0001

f (S)

2.193

0.630

1112

3.483

<0.0001

f (N)

0.176

0.013

1112

13.800

<0.0001

β (int)

−0.123

0.021

1112

−5.912

<0.0001

β (TP)

0.545

0.060

1112

9.042

<0.0001

γ (int)

0.921

0.019

1112

47.503

<0.0001