{"coeffs": [-0.46453622494331437, -0.21209272908686658, 3.3635539115341593, 0.10032901146613388], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [9.70119014404392e-08, 0.0, 0.0, 0.0], "covariance": [[0.006830245589773298, 0.0, 0.0, 0.0], [0.0, 0.0, 0.0, 0.0], [0.0, 0.0, 0.0, 0.0], [0.0, 0.0, 0.0, 0.0]]}