Formula: dd ~ C * diam^b

Parameters:
   Estimate Std. Error t value Pr(>|t|)  
C  0.010490   0.002287   4.587   0.0444 *
b -5.898815   0.598846  -9.850   0.0101 *
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 0.57 on 2 degrees of freedom

Number of iterations to convergence: 8 
Achieved convergence tolerance: 3.43e-06 
  (1 observation deleted due to missingness)