{"coeffs": [-1.6844384712795946e-07, -1.7369056951873054e-09, -0.3318858544709417, 0.001855206701427019], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.0348429938132194e-08, 2.2220578452324235e-08, 329.6228607136143, 646.3706356498851], "covariance": [[1.6279957984723622e-15, -3.199619351756153e-17, -2.0542868307167833e-06, -4.028454199927236e-06], [-3.199619351778736e-17, 4.93754106755896e-16, 1.6922400562143528e-06, 3.318359743162539e-06], [-2.054286830713813e-06, 1.6922400562116872e-06, 108651.23030502675, 213058.53797145872], [-4.028454199892437e-06, 3.3183597431596323e-06, 213058.53797145872, 417794.99863043654]]}