{"coeffs": [-2.784499800297862e-07, -7.574787894978999e-09, -0.28611716762737205, 0.02491300076448143], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.3552196630515356e-08, 7.581031597053275e-09, 0.009104456365737115, 0.007925506128027927], "covariance": [[1.8366203351215175e-16, -5.473296518716863e-18, 4.8807661620807726e-11, -4.043157594731303e-11], [-5.473296518716863e-18, 5.747204007552012e-17, 1.4433197873091524e-11, 1.3643438070832771e-11], [4.880766162080773e-11, 1.4433197873091524e-11, 8.289112571561106e-05, -6.837326513560621e-06], [-4.043157594731303e-11, 1.3643438070832771e-11, -6.837326513560621e-06, 6.281364738540822e-05]]}