{"coeffs": [7.575863478638728e-11, -0.271683484757634, 0.5035368857650178, 0.0029039263820379692], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.6604312072162604e-09, 8087208.184079714, 71348.3612539457, 6625.173951814855], "covariance": [[2.7570317938976476e-18, 0.0009082375556914896, 4.149310331291784e-06, 8.072566128219734e-07], [0.0009332362747318059, 65402936212645.914, 34699387798.83387, 42746143479.09296], [3.667446755809497e-06, -0.0, 5090588653.62354, 296555383.54986477], [7.947514129997509e-07, 40724709228.98832, 318161790.85147125, 43892929.891806066]]}