{"coeffs": [-1.1419889130524785e-06, -1.1206643464615615e-08, -0.2635388845455069, 0.02954018243073309], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.0212352233229209e-07, 6.011413017294356e-08, 0.01850704384324627, 0.016019172371348117], "covariance": [[1.0429213813554161e-14, -3.8996559395214236e-16, 7.881336931956134e-10, -6.573930593556857e-10], [-3.899655939521424e-16, 3.613708646449604e-15, 2.5241227426299367e-10, 2.4287013982102853e-10], [7.881336931956136e-10, 2.5241227426299367e-10, 0.00034251067181583964, -3.296017859039565e-05], [-6.573930593556857e-10, 2.4287013982102853e-10, -3.296017859039565e-05, 0.0002566138834629629]]}