Formula: dd ~ C * diam^b

Parameters:
    Estimate Std. Error t value Pr(>|t|)   
C  9.455e-03  9.158e-05  103.24  0.00617 **
b -2.352e+00  4.946e-02  -47.56  0.01338 * 
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 0.03173 on 1 degrees of freedom

Number of iterations to convergence: 4 
Achieved convergence tolerance: 7.316e-06