def METHOD_NAME(self):
    # check that the Sm predictions for the Ri agree with the Gammas
    par = flavio.default_parameters.get_central_all()
    mh = par['m_h']
    mt = par['m_t']
    als = par['alpha_s']
    Da = 0.059
    mZ = par['m_Z']
    arg = (mh, mt, als, Da, mZ)
    Rl = Zobs('Rl', *arg)
    Rc = Zobs('Rc', *arg)
    Rb = Zobs('Rb', *arg)
    Ge = Zobs('Gammae,mu', *arg)
    Gmu = Zobs('Gammae,mu', *arg)
    Gtau = Zobs('Gammatau', *arg)
    Gu = Zobs('Gammau', *arg)
    Gd = Zobs('Gammad,s', *arg)
    Gs = Zobs('Gammad,s', *arg)
    Gc = Zobs('Gammac', *arg)
    Gb = Zobs('Gammab', *arg)
    Ghad = Gu + Gd + Gc + Gs + Gb
    Gl = (Ge + Gmu + Gtau) / 3.
    self.assertAlmostEqual(Rl, Ghad / Gl, delta=1e-4)
    self.assertAlmostEqual(Rc, Gc / Ghad, delta=1e-4)
    self.assertAlmostEqual(Rb, Gb / Ghad, delta=1e-4)