{"coeffs": [-3.793049618930088e-07, -1.7672795383429107e-08, -0.2624138570062071, 0.030430146332449382], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.7003412846266894e-08, 9.993993152409763e-09, 0.009763587490134782, 0.008456681514782523], "covariance": [[2.89116048420594e-16, -1.122954168389031e-17, 7.021925951905369e-11, -5.876861953633504e-11], [-1.1229541683890311e-17, 9.987989913041322e-17, 2.2349999921950225e-11, 2.1719494127764465e-11], [7.021925951905369e-11, 2.2349999921950225e-11, 9.532764067751643e-05, -9.469859570948421e-06], [-5.876861953633504e-11, 2.1719494127764465e-11, -9.469859570948421e-06, 7.151546224246443e-05]]}