{"coeffs": [-3.573329806596902e-07, -1.3573440904626544e-08, -0.26324298235683674, 0.052490714010873886], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.250443946582138e-08, 1.1472436472557703e-08, 0.016252392954256113, 0.014102290677827665], "covariance": [[5.064497956708189e-16, -3.819315221420045e-17, 2.1297475761746475e-10, -1.855736691294331e-10], [-3.819315221420046e-17, 1.3161679861687222e-16, 4.287641212638174e-11, 5.974239675914537e-11], [2.1297475761746475e-10, 4.287641212638174e-11, 0.0002641402767395537, -5.7158873730584815e-05], [-1.855736691294331e-10, 5.974239675914537e-11, -5.7158873730584815e-05, 0.00019887460236194508]]}