{"coeffs": [-3.8430276449080005e-07, 5.551149391717103e-09, -0.20708926412146866, 0.11995818372363395], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [8.988756008079613e-08, 4.3794950856534433e-08, 0.07456188802799789, 0.07092885278474637], "covariance": [[8.079773457278734e-15, -1.918852419870775e-15, 5.1613206603955e-09, -5.273406700513854e-09], [-1.918852419870775e-15, 1.917997720526266e-15, 8.341210711094135e-11, 2.2522700254787673e-09], [5.1613206603955e-09, 8.341210711094152e-11, 0.005559475146299696, -0.002494937907166825], [-5.273406700513854e-09, 2.2522700254787673e-09, -0.002494937907166825, 0.005030902157360223]]}