{"coeffs": [-6.734267425872287e-07, -2.4578671607520295e-08, -0.30232065531048724, 0.032853580082177196], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.7338880726013796e-08, 2.310787301523201e-08, 0.01401850234238203, 0.012087326046323364], "covariance": [[2.2409696283917606e-15, -8.771626172842864e-17, 3.271956315331041e-10, -2.7227974369453784e-10], [-8.771626172842863e-17, 5.339737952880877e-16, 6.775421911823051e-11, 7.306597461621214e-11], [3.271956315331041e-10, 6.775421911823051e-11, 0.00019651840792337042, -3.0437766269015383e-05], [-2.7227974369453784e-10, 7.306597461621214e-11, -3.0437766269015383e-05, 0.00014610345095012722]]}