iter chisq delta/lim lambda a b 0 5.1103239746e+06 0.00e+00 7.07e-01 1.000000e+00 1.000000e+00 1 1.3304344126e+05 -3.74e+06 7.07e-02 7.011364e+00 2.228167e+02 2 1.3290446272e+05 -1.05e+02 7.07e-03 -3.195295e+01 2.250561e+02 3 1.3279958538e+05 -7.90e+01 7.07e-04 -5.102627e+02 2.389204e+02 4 1.3279798349e+05 -1.21e+00 7.07e-05 -5.770380e+02 2.408559e+02 5 1.3279798348e+05 -2.35e-06 7.07e-06 -5.771314e+02 2.408587e+02 iter chisq delta/lim lambda a b After 5 iterations the fit converged. final sum of squares of residuals : 132798 rel. change during last iteration : -2.35102e-11 degrees of freedom (FIT_NDF) : 98 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 36.8114 variance of residuals (reduced chisquare) = WSSR/ndf : 1355.08 Final set of parameters Asymptotic Standard Error ======================= ========================== a = -577.131 +/- 1945 (337%) b = 240.859 +/- 56.49 (23.46%) correlation matrix of the fit parameters: a b a 1.000 b -0.998 1.000 iter chisq delta/lim lambda aa bb 0 5.0689010815e+06 0.00e+00 9.80e-01 1.000000e+00 1.000000e+00 1 1.3046686978e+05 -3.79e+06 9.80e-02 1.172773e+02 1.106372e+02 2 1.2074716009e+05 -8.05e+03 9.80e-03 6.053195e+02 -3.561808e+02 3 9.8095704395e+04 -2.31e+04 9.80e-04 3.009614e+03 -2.661363e+03 4 9.8040471500e+04 -5.63e+01 9.80e-05 3.134281e+03 -2.780891e+03 5 9.8040471485e+04 -1.51e-05 9.80e-06 3.134345e+03 -2.780953e+03 iter chisq delta/lim lambda aa bb After 5 iterations the fit converged. final sum of squares of residuals : 98040.5 rel. change during last iteration : -1.51467e-10 degrees of freedom (FIT_NDF) : 98 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 31.6293 variance of residuals (reduced chisquare) = WSSR/ndf : 1000.41 Final set of parameters Asymptotic Standard Error ======================= ========================== aa = 3134.35 +/- 530.8 (16.94%) bb = -2780.95 +/- 509 (18.3%) correlation matrix of the fit parameters: aa bb aa 1.000 bb -1.000 1.000 iter chisq delta/lim lambda aaa bbb 0 1.6606716013e+06 0.00e+00 9.80e-01 1.000000e+00 1.000000e+00 1 3.6419319985e+04 -4.46e+06 9.80e-02 5.817813e+01 7.298767e+01 2 2.5572102437e+04 -4.24e+04 9.80e-03 -4.588023e+02 5.692906e+02 3 6.5943618679e+01 -3.87e+07 9.80e-04 -3.010106e+03 3.015422e+03 4 3.7498674938e+00 -1.66e+06 9.80e-05 -3.142395e+03 3.142258e+03 5 3.7498507724e+00 -4.46e-01 9.80e-06 -3.142464e+03 3.142323e+03 iter chisq delta/lim lambda aaa bbb After 5 iterations the fit converged. final sum of squares of residuals : 3.74985 rel. change during last iteration : -4.45921e-06 degrees of freedom (FIT_NDF) : 98 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 0.195611 variance of residuals (reduced chisquare) = WSSR/ndf : 0.0382638 Final set of parameters Asymptotic Standard Error ======================= ========================== aaa = -3142.46 +/- 3.283 (0.1045%) bbb = 3142.32 +/- 3.148 (0.1002%) correlation matrix of the fit parameters: aaa bbb aaa 1.000 bbb -1.000 1.000