Abell    # gal   mean   err in  - err  disp   + err  
                  vel.    mean   disp          disp
 ___________________________________________________
 A  119       86 13277.4   92.0   63.6  853.4   68.5 
 A  979       19 16200.6  160.3  112.3  698.8  130.3 
 A 1069        9 18649.1  544.3  396.8 1632.9  481.6 
 A 3577       24 13959.5  309.0  215.3 1513.9  246.4