{"coeffs": [-2.3066240348009717e-07, -6.652026211583019e-09, -0.3183149182839168, 0.033226028110154064], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.07989383198132e-08, 1.385375281822081e-08, 0.02525720626844111, 0.02171713785464867], "covariance": [[9.485746016276582e-16, -3.6263871569683715e-17, 4.0535539350813644e-10, -3.3516789798301923e-10], [-3.6263871569683715e-17, 1.9192646714836105e-16, 6.930982150660167e-11, 7.852900929285787e-11], [4.053553935081365e-10, 6.930982150660166e-11, 0.0006379264684865809, -0.00011406004160561247], [-3.3516789798301923e-10, 7.852900929285787e-11, -0.00011406004160561247, 0.0004716340765978142]]}