******************************************************************************* Wed Mar 25 17:10:21 2026 FIT: data read from 'first_test.txt' format = z #datapoints = 4 residuals are weighted equally (unit weight) function used for fitting: A*x+B fitted parameters initialized with current variable values Warning: Initial value of parameter 'B' is zero. iter chisq delta/lim lambda A B 0 3.7754834810e+03 0.00e+00 2.97e+01 1.000000e+00 1.000000e-30 BREAK: Singular matrix in Invert_RtR ******************************************************************************* Wed Mar 25 17:10:29 2026 FIT: data read from 'first_test.txt' format = z #datapoints = 4 residuals are weighted equally (unit weight) function used for fitting: A*x+B fitted parameters initialized with current variable values iter chisq delta/lim lambda A B 0 3.5907054810e+03 0.00e+00 2.97e+01 1.000000e+00 1.000000e+00 5 9.9465658244e+01 -1.35e-03 2.97e-04 1.682744e+00 4.503012e+01 After 5 iterations the fit converged. final sum of squares of residuals : 99.4657 rel. change during last iteration : -1.34817e-08 degrees of freedom (FIT_NDF) : 2 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 7.05215 variance of residuals (reduced chisquare) = WSSR/ndf : 49.7328 Final set of parameters Asymptotic Standard Error ======================= ========================== A = 1.68274 +/- 0.1265 (7.517%) B = 45.0301 +/- 5.311 (11.79%) correlation matrix of the fit parameters: A B A 1.000 B 0.748 1.000 ******************************************************************************* Wed Mar 25 17:14:06 2026 FIT: data read from 'first_test.txt' format = z #datapoints = 4 residuals are weighted equally (unit weight) function used for fitting: A*x+B fitted parameters initialized with current variable values Warning: Initial value of parameter 'B' is zero. iter chisq delta/lim lambda A B 0 3.7754834810e+03 0.00e+00 3.38e+01 1.000000e+00 1.000000e-30 BREAK: Singular matrix in Invert_RtR ******************************************************************************* Wed Mar 25 17:14:13 2026 FIT: data read from 'first_test.txt' format = z #datapoints = 4 residuals are weighted equally (unit weight) function used for fitting: A*x+B fitted parameters initialized with current variable values iter chisq delta/lim lambda A B 0 3.9682614810e+03 0.00e+00 3.38e+01 1.000000e+00 1.000000e+00 5 3.4734096263e+01 -3.36e-04 3.38e-04 5.876258e-01 -2.681171e+01 After 5 iterations the fit converged. final sum of squares of residuals : 34.7341 rel. change during last iteration : -3.36116e-09 degrees of freedom (FIT_NDF) : 2 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 4.16738 variance of residuals (reduced chisquare) = WSSR/ndf : 17.367 Final set of parameters Asymptotic Standard Error ======================= ========================== A = 0.587626 +/- 0.04417 (7.517%) B = -26.8117 +/- 2.112 (7.877%) correlation matrix of the fit parameters: A B A 1.000 B 0.163 1.000 ******************************************************************************* Wed Mar 25 17:14:34 2026 FIT: data read from 'first_test.txt' format = z #datapoints = 4 residuals are weighted equally (unit weight) function used for fitting: A*x+B fitted parameters initialized with current variable values iter chisq delta/lim lambda A B 0 3.9682614810e+03 0.00e+00 3.38e+01 1.000000e+00 1.000000e+00 5 3.4734096263e+01 -3.36e-04 3.38e-04 5.876258e-01 -2.681171e+01 After 5 iterations the fit converged. final sum of squares of residuals : 34.7341 rel. change during last iteration : -3.36116e-09 degrees of freedom (FIT_NDF) : 2 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 4.16738 variance of residuals (reduced chisquare) = WSSR/ndf : 17.367 Final set of parameters Asymptotic Standard Error ======================= ========================== A = 0.587626 +/- 0.04417 (7.517%) B = -26.8117 +/- 2.112 (7.877%) correlation matrix of the fit parameters: A B A 1.000 B 0.163 1.000 ******************************************************************************* Wed Mar 25 18:00:20 2026 FIT: data read from 'first_test.txt' format = z #datapoints = 5 residuals are weighted equally (unit weight) function used for fitting: A*x+B fitted parameters initialized with current variable values iter chisq delta/lim lambda A B 0 4.3038838810e+03 0.00e+00 3.03e+01 1.000000e+00 1.000000e+00 5 7.7126310821e+01 -2.27e-05 3.03e-04 5.892187e-01 -2.534379e+01 After 5 iterations the fit converged. final sum of squares of residuals : 77.1263 rel. change during last iteration : -2.27353e-10 degrees of freedom (FIT_NDF) : 3 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 5.07038 variance of residuals (reduced chisquare) = WSSR/ndf : 25.7088 Final set of parameters Asymptotic Standard Error ======================= ========================== A = 0.589219 +/- 0.05373 (9.119%) B = -25.3438 +/- 2.301 (9.08%) correlation matrix of the fit parameters: A B A 1.000 B 0.171 1.000 ******************************************************************************* Wed Mar 25 18:00:37 2026 FIT: data read from 'first_test.txt' format = z #datapoints = 4 residuals are weighted equally (unit weight) function used for fitting: A*x+B fitted parameters initialized with current variable values iter chisq delta/lim lambda A B 0 3.9682614810e+03 0.00e+00 3.38e+01 1.000000e+00 1.000000e+00 5 3.4734096263e+01 -3.36e-04 3.38e-04 5.876258e-01 -2.681171e+01 After 5 iterations the fit converged. final sum of squares of residuals : 34.7341 rel. change during last iteration : -3.36116e-09 degrees of freedom (FIT_NDF) : 2 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 4.16738 variance of residuals (reduced chisquare) = WSSR/ndf : 17.367 Final set of parameters Asymptotic Standard Error ======================= ========================== A = 0.587626 +/- 0.04417 (7.517%) B = -26.8117 +/- 2.112 (7.877%) correlation matrix of the fit parameters: A B A 1.000 B 0.163 1.000 ******************************************************************************* Wed Mar 25 18:00:50 2026 FIT: data read from 'first_test.txt' format = z #datapoints = 5 residuals are weighted equally (unit weight) function used for fitting: A*x+B fitted parameters initialized with current variable values iter chisq delta/lim lambda A B 0 4.3038838810e+03 0.00e+00 3.03e+01 1.000000e+00 1.000000e+00 5 7.7126310821e+01 -2.27e-05 3.03e-04 5.892187e-01 -2.534379e+01 After 5 iterations the fit converged. final sum of squares of residuals : 77.1263 rel. change during last iteration : -2.27353e-10 degrees of freedom (FIT_NDF) : 3 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 5.07038 variance of residuals (reduced chisquare) = WSSR/ndf : 25.7088 Final set of parameters Asymptotic Standard Error ======================= ========================== A = 0.589219 +/- 0.05373 (9.119%) B = -25.3438 +/- 2.301 (9.08%) correlation matrix of the fit parameters: A B A 1.000 B 0.171 1.000 ******************************************************************************* Wed Mar 25 18:01:05 2026 FIT: data read from 'first_test.txt' format = z #datapoints = 5 residuals are weighted equally (unit weight) function used for fitting: A*x+B fitted parameters initialized with current variable values iter chisq delta/lim lambda A B 0 4.3038838810e+03 0.00e+00 3.03e+01 1.000000e+00 1.000000e+00 5 7.7126310821e+01 -2.27e-05 3.03e-04 5.892187e-01 -2.534379e+01 After 5 iterations the fit converged. final sum of squares of residuals : 77.1263 rel. change during last iteration : -2.27353e-10 degrees of freedom (FIT_NDF) : 3 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 5.07038 variance of residuals (reduced chisquare) = WSSR/ndf : 25.7088 Final set of parameters Asymptotic Standard Error ======================= ========================== A = 0.589219 +/- 0.05373 (9.119%) B = -25.3438 +/- 2.301 (9.08%) correlation matrix of the fit parameters: A B A 1.000 B 0.171 1.000