{"coeffs": [-1.9270705014817307e-06, 1.6856059774798984e-05, 0.4157904510530589, 0.20739320263280606], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.728309835146052e-07, 1.097687061294519e-06, 0.017102265543373633, 0.021673151314355113], "covariance": [[3.2813533567430994e-13, -5.374459485446943e-13, -5.043003918585477e-09, -1.1823835352137393e-08], [-5.374459485446973e-13, 1.2049168845333968e-12, 1.6524666121045353e-08, 2.2835159994737464e-08], [-5.043003918585551e-09, 1.652466612104543e-08, 0.00029248748671606504, 0.0002710887978869658], [-1.1823835352137425e-08, 2.283515999473741e-08, 0.00027108879788696353, 0.0004697254878949328]]}