{"coeffs": [-1.541714032445038e-07, 9.183925427587541e-09, -0.3312756067373103, 0.0014324573799293127], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.9730255057745635e-08, 1.070023186344331e-08, 203083.29991401176, 185387.66084834674], "covariance": [[3.8928296464369716e-16, 3.3764914663840524e-33, 6.378012052218971e-11, 4.5787483003645054e-11], [3.3764914663840524e-33, 1.1449496193144747e-16, 1.9931287663184286e-12, 5.964642152949196e-13], [4.7835090391642286e-11, 1.9931287663184286e-12, 41242826703.96445, 37649137928.42189], [3.189006026109486e-11, 0.0, 37649137928.42189, 34368584794.82163]]}