Formula: dd ~ C * diam^b

Parameters:
    Estimate Std. Error t value Pr(>|t|)  
C  0.0024122  0.0003807   6.337   0.0240 *
b -3.3654382  0.4606491  -7.306   0.0182 *
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 0.6236 on 2 degrees of freedom

Number of iterations to convergence: 8 
Achieved convergence tolerance: 7.019e-06