iter chisq delta/lim lambda a1 0 2.7831720078e+00 0.00e+00 2.91e+00 7.000000e+01 1 4.3995356031e-01 -5.33e+05 2.91e-01 8.402458e+01 2 2.9277548444e-02 -1.40e+06 2.91e-02 9.742297e+01 3 1.1880694465e-03 -2.36e+06 2.91e-03 1.036298e+02 4 8.2148022230e-04 -4.46e+04 2.91e-04 1.045320e+02 5 8.2139550013e-04 -1.03e+01 2.91e-05 1.045462e+02 6 8.2139549988e-04 -3.08e-05 2.91e-06 1.045462e+02 iter chisq delta/lim lambda a1 After 6 iterations the fit converged. final sum of squares of residuals : 0.000821395 rel. change during last iteration : -3.0816e-10 degrees of freedom (FIT_NDF) : 5 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 0.0128171 variance of residuals (reduced chisquare) = WSSR/ndf : 0.000164279 Final set of parameters Asymptotic Standard Error ======================= ========================== a1 = 104.546 +/- 0.6256 (0.5983%) iter chisq delta/lim lambda a2 0 4.0004740487e+00 0.00e+00 2.91e+00 7.000000e+01 1 7.5024253455e-01 -4.33e+05 2.91e-01 8.681591e+01 2 8.3886823327e-02 -7.94e+05 2.91e-02 1.067273e+02 3 4.7523445732e-03 -1.67e+06 2.91e-03 1.220401e+02 4 3.8954601858e-04 -1.12e+06 2.91e-04 1.280499e+02 5 3.5458994448e-04 -9.86e+03 2.91e-05 1.286993e+02 6 3.5458766336e-04 -6.43e-01 2.91e-06 1.287046e+02 iter chisq delta/lim lambda a2 After 6 iterations the fit converged. final sum of squares of residuals : 0.000354588 rel. change during last iteration : -6.43316e-06 degrees of freedom (FIT_NDF) : 5 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 0.00842125 variance of residuals (reduced chisquare) = WSSR/ndf : 7.09175e-05 Final set of parameters Asymptotic Standard Error ======================= ========================== a2 = 128.705 +/- 0.944 (0.7335%)