Formula: dd ~ C * diam^b

Parameters:
  Estimate Std. Error t value Pr(>|t|)    
C  0.07628    0.00563   13.55 0.000172 ***
b -5.32317    0.32022  -16.62 7.67e-05 ***
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Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 0.9097 on 4 degrees of freedom

Number of iterations to convergence: 6 
Achieved convergence tolerance: 9.288e-07