{"coeffs": [8.6112190621124e-08, 1.465226123775479e-05, 0.7102024139582507, 0.08763011617936249], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.3313437551712388e-08, 2.5756823371131127e-06, 0.02656355250512426, 0.0049712760681901], "covariance": [[5.435163704775933e-16, -3.022071738279679e-14, -3.1760497267298895e-10, -7.323261104954542e-11], [-3.022071738279667e-14, 6.634139501716466e-12, 6.828858577681073e-08, 1.2133317552789555e-08], [-3.1760497267298874e-10, 6.828858577681077e-08, 0.0007056223216924932, 0.00012696121808203093], [-7.323261104954519e-11, 1.2133317552789582e-08, 0.00012696121808203117, 2.471358574615962e-05]]}