Formula: dd ~ C * diam^b

Parameters:
    Estimate Std. Error t value Pr(>|t|)  
C  0.0106989  0.0006093   17.56   0.0362 *
b -1.8559561  0.0842533  -22.03   0.0289 *
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 0.2369 on 1 degrees of freedom

Number of iterations to convergence: 6 
Achieved convergence tolerance: 3.317e-07