{"coeffs": [-1.5474537375525254e-07, -7.845509494117596e-10, -0.32521757327120865, 0.04338350897597023], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.093849459521924e-08, 2.68687171662666e-08, 0.08860208872893613, 0.07512493194258162], "covariance": [[5.03227001543595e-15, -2.4606735555469293e-16, 4.004040341385465e-09, -3.2567749430085086e-09], [-2.4606735555469293e-16, 7.219279621608295e-16, 4.04154885898134e-10, 6.253106907685611e-10], [4.004040341385465e-09, 4.041548858981339e-10, 0.00785033012713027, -0.0021979584828609776], [-3.2567749430085086e-09, 6.253106907685611e-10, -0.0021979584828609776, 0.00564375539937752]]}