{"coeffs": [-7.810225825548591e-07, -2.990147366822256e-08, -0.13872123919291268, 0.06139669506554714], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [6.043598709634872e-08, 5.159226046191832e-08, 0.027900951879100643, 0.02488337628652696], "covariance": [[3.652508536310029e-15, -5.245499046737304e-16, 7.654529133272672e-10, -7.827784128053596e-10], [-5.245499046737301e-16, 2.6617613395704205e-15, 5.238283956015772e-10, 6.015306981856906e-10], [7.654529133272673e-10, 5.238283956015768e-10, 0.0007784631157598897, -4.430785415031075e-05], [-7.827784128053594e-10, 6.015306981856906e-10, -4.430785415031066e-05, 0.0006191824154168922]]}