{"coeffs": [-2.0002580084751648e-07, -5.681520291270954e-09, -0.22574669652203463, 0.01527375134331788], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.3151991955535506e-07, 9.239644229708023e-08, 0.11754779783586075, 0.0934689590514425], "covariance": [[1.7297489239847065e-14, -2.615901832842659e-16, 4.750068958427393e-09, -3.4674172580506982e-09], [-2.615901832842659e-16, 8.537102549157677e-15, 1.8485020998415054e-09, 1.2778241283225888e-09], [4.750068958427393e-09, 1.8485020998415058e-09, 0.013817484776060391, -0.002282107163187847], [-3.467417258050698e-09, 1.2778241283225886e-09, -0.002282107163187847, 0.008736446306160234]]}