{"coeffs": [-4.0338089792448244e-07, -4.919442031767312e-09, -0.3376206704242202, 0.03779521408875508], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.4868682352821337e-08, 5.916924373312264e-09, 0.006830174305383069, 0.005833230342845352], "covariance": [[2.2107771490910067e-16, -9.380588122898122e-18, 5.990972753340792e-11, -4.9114031491434205e-11], [-9.38058812289812e-18, 3.5009994039496726e-17, 7.30833822592919e-12, 9.728336609226183e-12], [5.99097275334079e-11, 7.308338225929189e-12, 4.6651281041915086e-05, -1.1127304594992341e-05], [-4.9114031491434205e-11, 9.728336609226183e-12, -1.112730459499234e-05, 3.4026576232691706e-05]]}