{"coeffs": [-1.1968587472188473e-07, 2.8800259059140994e-09, -0.3205467166380915, 0.04038434205581417], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.161790778123098e-08, 1.690947270943034e-08, 0.06520667153364931, 0.05568665620822826], "covariance": [[1.732050248087046e-15, -8.059972203604145e-17, 1.6220292153915362e-09, -1.3350568012273557e-09], [-8.059972203604142e-17, 2.859302673109695e-16, 2.035897350047475e-10, 2.786463116321095e-10], [1.6220292153915362e-09, 2.0358973500474747e-10, 0.004251910012497232, -0.0010349321278873536], [-1.3350568012273554e-09, 2.7864631163210946e-10, -0.0010349321278873536, 0.0031010036796534075]]}