Formula: dd ~ C * diam^b

Parameters:
    Estimate Std. Error t value Pr(>|t|)
C  6.877e-04  9.032e-04   0.761    0.586
b -1.060e+01  3.866e+00  -2.742    0.223

Residual standard error: 0.9613 on 1 degrees of freedom

Number of iterations to convergence: 8 
Achieved convergence tolerance: 3.167e-06