{"coeffs": [-3.522559381098514e-07, 5.548347780053792e-10, -0.3481749289408073, 0.06864312646703344], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.913895572561926e-08, 1.3868420536926935e-08, 0.03520435896559224, 0.026213924390044177], "covariance": [[3.497416084316755e-15, -2.0729059084525968e-16, 1.781987913770043e-09, -1.2195453986271153e-09], [-2.0729059084525973e-16, 1.9233308818905676e-16, -1.794554339854794e-12, 1.5740092838643463e-10], [1.781987913770043e-09, -1.794554339854794e-12, 0.0012393468901782752, -0.0005765112707904499], [-1.2195453986271153e-09, 1.5740092838643463e-10, -0.0005765112707904499, 0.0006871698319269531]]}