{"coeffs": [-3.9774256219735684e-08, 5.364569783560748e-07, 0.730542855420366, 0.15174887661728162], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.628007714574558e-08, 1.0626499707424258e-07, 0.04149765409740367, 0.03770658967640357], "covariance": [[1.3162439977012506e-15, -3.524803803068372e-15, -1.2245524242750246e-09, -1.3316042962633563e-09], [-3.5248038030683665e-15, 1.1292249603188783e-14, 4.314760995748988e-09, 3.919516192176931e-09], [-1.2245524242750207e-09, 4.314760995748984e-09, 0.0017220552955877638, 0.0014388574760538849], [-1.331604296263355e-09, 3.9195161921769346e-09, 0.0014388574760538877, 0.0014217869050246643]]}