{"coeffs": [-1.7604249315171922e-07, 1.0906981271167376e-09, -0.27048614361268014, 0.017582616397992197], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.217532350990941e-08, 2.593929740479651e-08, 0.04002233814729478, 0.03136743794371894], "covariance": [[1.778757913165518e-15, -2.813533888562717e-17, 5.567604005680035e-10, -3.868614482595239e-10], [-2.813533888562715e-17, 6.728471498544829e-16, 1.9584157602111003e-10, 1.4056772849358588e-10], [5.567604005680035e-10, 1.9584157602111006e-10, 0.001601787550776407, -0.0001155760727296024], [-3.8686144825952394e-10, 1.405677284935859e-10, -0.0001155760727296024, 0.0009839161631530586]]}