{"coeffs": [-1.7673220582493095e-07, 3.5262711887570083e-09, -0.3053663127989602, 0.010858372514980315], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.926485636492403e-08, 1.6267753902489076e-08, 0.025085660591358066, 0.01756406431174133], "covariance": [[8.564318180596346e-16, -5.5939186267359665e-18, 2.745639213520603e-10, -1.8153587587711175e-10], [-5.5939186267359696e-18, 2.646398170319486e-16, 4.60674719980519e-11, 2.3436597247188504e-11], [2.745639213520603e-10, 4.6067471998051915e-11, 0.0006292903673048152, -0.0002427978349367614], [-1.8153587587711175e-10, 2.3436597247188498e-11, -0.0002427978349367614, 0.0003084963551469855]]}