{"coeffs": [-1.798444483041575e-07, 4.9317917394370374e-15, -0.34957971588812886, 0.023773523392375314], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.3571234976387767e-08, 9.288748778362961e-09, 0.019501137828434705, 0.016760595374386653], "covariance": [[5.55603118312086e-16, -1.8540173317177898e-17, 2.1508771387135e-10, -1.749591086624464e-10], [-1.8540173317177895e-17, 8.628085386753941e-17, 2.5580804802396688e-11, 3.6154787710494906e-11], [2.1508771387135e-10, 2.558080480239669e-11, 0.00038029437660360707, -5.741598647118239e-05], [-1.749591086624464e-10, 3.6154787710494906e-11, -5.741598647118239e-05, 0.00028091755730391124]]}