Formula: dd ~ C * diam^b

Parameters:
   Estimate Std. Error t value Pr(>|t|)  
C  0.005800   0.000859   6.752   0.0936 .
b -2.298649   0.520158  -4.419   0.1417  
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 0.4123 on 1 degrees of freedom

Number of iterations to convergence: 7 
Achieved convergence tolerance: 6.516e-06 
  (1 observation deleted due to missingness)