{"coeffs": [-7.835725981699935e-07, -2.659295998315049e-08, -0.31408456576571164, 0.06846710257514645], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [8.624470349556353e-08, 2.6894861404746977e-08, 0.026090218547051347, 0.021015926585822586], "covariance": [[7.438148881037667e-15, -5.564408989734553e-16, 1.7773721188395758e-09, -1.3530196140768685e-09], [-5.564408989734555e-16, 7.233335699805486e-16, 5.103258433373645e-11, 2.476399730265537e-10], [1.7773721188395758e-09, 5.103258433373658e-11, 0.0006806995038329022, -0.00028511605305413023], [-1.3530196140768685e-09, 2.4763997302655357e-10, -0.0002851160530541303, 0.0004416691702606845]]}