Cu+Cu 62 GeV antiparticle to particle ratios (1-Sigma) statistical and systematic error. Pions Npart Ratio Stat Sys 106 0.99 0.002 0.03 97 1.00 0.002 0.03 88 1.00 0.002 0.03 76 0.98 0.002 0.03 65 0.99 0.002 0.03 55 0.98 0.002 0.03 47 1.01 0.003 0.04 38 1.00 0.003 0.04 32 1.00 0.003 0.04 26 0.97 0.004 0.04 Protons Ratio Stat Sys 106 0.89 0.006 0.02 97 0.89 0.006 0.02 88 0.90 0.007 0.02 76 0.89 0.007 0.02 65 0.89 0.008 0.02 55 0.88 0.009 0.02 47 0.91 0.011 0.04 38 0.90 0.012 0.04 32 0.91 0.014 0.04 26 0.90 0.017 0.04 Kaons Ratio Stat Sys 106 0.48 0.005 0.03 97 0.49 0.005 0.03 88 0.51 0.005 0.03 76 0.52 0.006 0.03 65 0.53 0.006 0.03 55 0.52 0.007 0.03 47 0.56 0.008 0.04 38 0.54 0.009 0.04 32 0.56 0.010 0.04 26 0.55 0.012 0.04