{"coeffs": [-1.5724388228360394e-07, 2.2479853239082898e-10, -0.3223976196671172, 0.03933660991589949], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.2228871617230232e-08, 4.9826750013446884e-09, 0.014725350363220906, 0.012581140180578524], "covariance": [[1.4954530103069915e-16, -6.741341145737429e-18, 1.0641650230196351e-10, -8.756152617594056e-11], [-6.7413411457374274e-18, 2.4827050169025293e-17, 1.3583201029058457e-11, 1.8202944521233768e-11], [1.0641650230196351e-10, 1.3583201029058457e-11, 0.00021683594331961005, -5.160965173398594e-05], [-8.756152617594055e-11, 1.8202944521233768e-11, -5.160965173398593e-05, 0.00015828508824336743]]}