{"coeffs": [-2.4470517269630215e-07, 6.901749275904287e-09, -0.3065897677479541, 0.03047845873334474], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.279359470667024e-08, 2.0971608934602845e-08, 0.03152832414025031, 0.027171133451687462], "covariance": [[1.831291747918755e-15, -6.50734191649975e-17, 6.423474952883547e-10, -5.311988085867088e-10], [-6.507341916499751e-17, 4.398083813059139e-16, 1.3607437165898478e-10, 1.4181475470058283e-10], [6.423474952883548e-10, 1.360743716589848e-10, 0.0009940352230926905, -0.00014259408750476736], [-5.311988085867089e-10, 1.4181475470058283e-10, -0.00014259408750476736, 0.0007382704930494094]]}