Z Events:
  10000000  Total
   2501052  mu-, e- vs mu+, e+
   1251897  mu-, e- vs pi+
   1248820  pi- vs mu+, e+
    624890  pi- vs pi+
   1249843  mu-, e- vs rho+
   1249136  rho- vs mu+, e+
    624102  pi- vs rho+
    625707  rho- vs pi+
    624553  rho- vs rho+