{"coeffs": [-8.566331262498285e-07, -2.6210929372857004e-08, -0.03372773795189509, 0.05699240731129381], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.05124019359765e-08, 6.595200519113158e-08, 0.02535554715224421, 0.022420010249585662], "covariance": [[2.5515027493416424e-15, -5.019859066277746e-16, 4.2182168998846546e-10, -4.853295684973298e-10], [-5.019859066277745e-16, 4.349666988731046e-15, 7.90574119173335e-10, 7.63641430011674e-10], [4.218216899884656e-10, 7.90574119173335e-10, 0.0006429037713896795, 5.725839353036113e-05], [-4.853295684973298e-10, 7.63641430011674e-10, 5.725839353036114e-05, 0.0005026568595915261]]}