Formula: dd ~ C * diam^b

Parameters:
  Estimate Std. Error t value Pr(>|t|)    
C  0.06117    0.00201   30.43 0.001078 ** 
b -3.40824    0.09513  -35.83 0.000778 ***
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Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 0.2016 on 2 degrees of freedom

Number of iterations to convergence: 4 
Achieved convergence tolerance: 7.908e-06