{"coeffs": [-6.228835231889511e-07, 5.656921603487713e-06, 0.7871747702785994, 0.22550910864026763], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.7580054955286455e-07, 3.351033092421717e-07, 0.016110764352792628, 0.020979500469704683], "covariance": [[3.0905833223089186e-14, -5.157300357570161e-14, -1.605396652365546e-09, -3.5430231437580978e-09], [-5.15730035757013e-14, 1.1229422786505457e-13, 4.811312003818209e-09, 6.791342040042893e-09], [-1.605396652365521e-09, 4.811312003818183e-09, 0.00025955672803121364, 0.000256287967226222], [-3.5430231437580866e-09, 6.79134204004291e-09, 0.0002562879672262243, 0.00044013943995833906]]}