{"coeffs": [-1.580775352093816e-07, 2.4930763338415478e-09, -0.2641208141853743, 0.014859845725022415], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.5961271478877006e-08, 2.883615631094583e-08, 0.04549512632456247, 0.03774161556778801], "covariance": [[2.112438475955033e-15, -3.173173160565914e-17, 6.963298041224505e-10, -5.398993312072617e-10], [-3.173173160565912e-17, 8.315239107893009e-16, 2.005683824863075e-10, 1.5042234073063004e-10], [6.963298041224505e-10, 2.005683824863075e-10, 0.0020698065192878974, -0.00045215324485547], [-5.398993312072617e-10, 1.5042234073063006e-10, -0.00045215324485547005, 0.001424429545666698]]}