{"coeffs": [4.185280166879685e-08, -8.42190749175176e-09, -0.22491596912729525, 0.00011714278476393676], "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]]}