Formula: dd ~ C * diam^b

Parameters:
  Estimate Std. Error t value Pr(>|t|)  
C  0.12801    0.01905   6.721   0.0940 .
b -2.88841    0.32629  -8.852   0.0716 .
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 

Residual standard error: 1.535 on 1 degrees of freedom

Number of iterations to convergence: 6 
Achieved convergence tolerance: 8.04e-07