{"coeffs": [-3.8620940402486097e-07, -7.236204059008228e-09, -0.3463480372824434, 0.035177567587729844], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.014396860382588e-08, 1.571961075795796e-08, 0.01846171742744116, 0.01577282874292816], "covariance": [[1.611538215264958e-15, -6.213075240171816e-17, 4.2949688858056625e-10, -3.509418975699903e-10], [-6.213075240171816e-17, 2.471061623817076e-16, 5.1566489025982866e-11, 6.637829506765095e-11], [4.2949688858056625e-10, 5.156648902598287e-11, 0.0003408350103706847, -7.879783786919304e-05], [-3.5094189756999024e-10, 6.637829506765094e-11, -7.879783786919302e-05, 0.0002487821265537407]]}