{"coeffs": [-1.8652937024644086e-07, -2.8283226694679666e-09, -0.3326666246423567, 0.018401013899523862], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.912723204533703e-08, 2.511401184704799e-08, 0.03896628334290088, 0.034811308016253026], "covariance": [[2.4134849284363896e-15, -5.030613637317899e-17, 6.674493868030404e-10, -5.56938296427417e-10], [-5.030613637317901e-17, 6.307135910536669e-16, 1.8395122358400547e-10, 1.7417660835470884e-10], [6.674493868030404e-10, 1.8395122358400547e-10, 0.0015183712375592346, -2.134615090833917e-05], [-5.569382964274169e-10, 1.7417660835470884e-10, -2.1346150908339134e-05, 0.001211827165802442]]}