{"coeffs": [-1.1834813647484e-07, 3.837326873757195e-09, -0.24229590804256937, 0.011144797669644775], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.294745623385063e-08, 3.020749304401509e-08, 0.06250835635771203, 0.03445521716199051], "covariance": [[1.8444839969585152e-15, -7.806166249621756e-18, 6.667285955369803e-10, -2.8354813966266215e-10], [-7.80616624962175e-18, 9.1249263600422e-16, 3.7002547603857677e-10, 1.7684087980663448e-10], [6.667285955369803e-10, 3.7002547603857677e-10, 0.003907294614542718, 0.0002192598138074118], [-2.8354813966266215e-10, 1.7684087980663448e-10, 0.0002192598138074118, 0.001187161989679925]]}