{"coeffs": [-4.29439695608705e-08, -3.85937049281224e-10, -0.26699571401533784, 0.00023984689117419764], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.9790112570423912e-08, 1.3519226643982971e-08, 489549772017.9537, 29775371315.3683], "covariance": [[3.916485555500506e-16, -4.755813589823712e-33, -2.5306083806931733e-05, 1.5391655556521162e-06], [-5.569553234902766e-33, 1.8276948905137909e-16, 7.064894474664374e-05, -3.0873823141396354e-06], [-2.5306080999594898e-05, 7.064894474664374e-05, 2.396589792828304e+23, -1.4576526239188468e+22], [1.5391655836452208e-06, -2.9437060311101556e-06, -1.4576526239188468e+22, 8.865727369680574e+20]]}