Final set of parameters            Asymptotic Standard Error
=======================            ==========================

a               = -79.7647         +/- 1.21e-08     (1.517e-08%)
k               = 3.56076e-05      +/- 6.229e-09    (0.01749%)
b               = 111.38           +/- 9.954e-05    (8.937e-05%)