9 Mass squared ren. point (everything in GeV) 0.118 alpha_s ( m_Z ) 0.0078165 alpha_EM ( m_Z ) 0.23117 sin^2 theta_weak 91.1876 m_Z 174.5 m_t 4.24 m_b 1.31 m_c 1.77699 m_tau 0.3289 up initial fraction 0.1814 down initial fraction 0.0443 strange initial fraction 0.0126 charm initial fraction 0.0 bottom initial fraction 0.4328 glue initial fraction 0.0 gamma initial fraction 0.0 e initial fraction 0.0 nu_e initial fraction 0.0 mu initial fraction 0.0 nu_mu initial fraction 0.0 tau initial fraction 0.0 nu_tau initial fraction