{"coeffs": [-7.863532481033352e-08, -1.214535980467724e-08, -0.3009480435561456, 0.0007081623804112514], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [Infinity, Infinity, Infinity, Infinity], "covariance": [[Infinity, Infinity, Infinity, Infinity], [Infinity, Infinity, Infinity, Infinity], [Infinity, Infinity, Infinity, Infinity], [Infinity, Infinity, Infinity, Infinity]]}