Formula: dd ~ C * diam^b

Parameters:
  Estimate Std. Error t value Pr(>|t|)    
C  0.07484    0.00481   15.56 0.000577 ***
b -3.58010    0.18635  -19.21 0.000308 ***
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Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 0.5206 on 3 degrees of freedom

Number of iterations to convergence: 5 
Achieved convergence tolerance: 7.469e-06