Formula: dd ~ C * diam^b

Parameters:
   Estimate Std. Error t value Pr(>|t|)  
C  0.017667   0.002703   6.537   0.0966 .
b -2.670551   0.502960  -5.310   0.1185  
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 0.8938 on 1 degrees of freedom

Number of iterations to convergence: 6 
Achieved convergence tolerance: 2.732e-06 
  (1 observation deleted due to missingness)