******************************************************************************* Sun Feb 9 10:47:52 2025 FIT: data read from 'all_MARK_INFLECTOR_DS_phase_space.dat_trimmed_sorted' u 9:15 format = x:z #datapoints = 633 residuals are weighted equally (unit weight) function used for fitting: f(x) f(x) = a + b*x + c* x**2 fitted parameters initialized with current variable values iter chisq delta/lim lambda a b c 0 1.1047257147e+03 0.00e+00 5.77e-01 1.000000e+00 1.000000e+00 1.000000e+00 2 1.0228449832e+02 -9.38e-01 5.77e-03 2.258413e+00 1.307241e+00 9.957664e-01 After 2 iterations the fit converged. final sum of squares of residuals : 102.284 rel. change during last iteration : -9.37799e-06 degrees of freedom (FIT_NDF) : 630 rms of residuals (FIT_STDFIT) = sqrt(WSSR/ndf) : 0.402935 variance of residuals (reduced chisquare) = WSSR/ndf : 0.162356 Final set of parameters Asymptotic Standard Error ======================= ========================== a = 2.25841 +/- 0.02074 (0.9184%) b = 1.30724 +/- 14.95 (1144%) c = 0.995766 +/- 1.142e+04 (1.147e+06%) correlation matrix of the fit parameters: a b c a 1.000 b 0.026 1.000 c -0.635 -0.085 1.000