{"coeffs": [-6.9761032503023764e-09, 2.160289251622242e-06, 0.9092494957550358, 0.0978626691303292], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.048146396906897e-08, 8.211911959902808e-08, 0.008405667454911635, 0.0045482566045685945], "covariance": [[1.0986108693489102e-16, -4.531379892342549e-16, -3.6025458287737735e-11, -3.3332195028202326e-11], [-4.531379892342556e-16, 6.743549803719477e-15, 6.738045559278026e-10, 3.3784895535641313e-10], [-3.602545828773779e-11, 6.738045559278025e-10, 7.065524536256063e-05, 3.296579935185933e-05], [-3.333219502820235e-11, 3.378489553564129e-10, 3.2965799351859315e-05, 2.0686638141001838e-05]]}