Formula: dd ~ C * diam^b

Parameters:
    Estimate Std. Error t value Pr(>|t|)  
C  0.0221474  0.0009939   22.28   0.0286 *
b -5.4188651  0.2268136  -23.89   0.0266 *
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 0.1283 on 1 degrees of freedom

Number of iterations to convergence: 6 
Achieved convergence tolerance: 2.975e-06