{"coeffs": [-3.1378427911503656e-07, -1.0256619104652983e-08, -0.18889899498483353, 0.03160671429022714], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.526940301281338e-08, 3.398621150499723e-08, 0.036558185166029454, 0.03172999785366418], "covariance": [[2.049318849136517e-15, -9.734593740023601e-17, 6.098104895532044e-10, -5.194330878762898e-10], [-9.734593740023604e-17, 1.155062572462406e-15, 3.304781847158349e-10, 3.03099551537076e-10], [6.098104895532044e-10, 3.304781847158349e-10, 0.0013365009026336959, -6.733280220959014e-05], [-5.194330878762899e-10, 3.03099551537076e-10, -6.733280220959016e-05, 0.0010067927637935333]]}