{"coeffs": [-3.9894832806032365e-07, -1.3627040070395535e-08, -0.20572652869178032, 0.0377670725018065], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.2038320206995663e-07, 8.347680169000068e-08, 0.0793876334997885, 0.06898527385253454], "covariance": [[1.449211534061601e-14, -8.328166873625524e-16, 4.017700028812915e-09, -3.48934641406128e-09], [-8.328166873625524e-16, 6.9683764203917e-15, 1.8038535937178464e-09, 1.7781280493515586e-09], [4.017700028812915e-09, 1.8038535937178464e-09, 0.0063023963526967425, -0.0005054250812300345], [-3.48934641406128e-09, 1.7781280493515586e-09, -0.0005054250812300346, 0.004758968008509185]]}