Data set  : 
   Jun data , Horn=200kA
MC : 
   200kA with Cho-CERN model : Hatched box
   normalized to GCalor mode : blank box
 
Analysis : 
   apply auto-fitter only, direction of the event is the direction of 
   dominant charge ring.
   1999-AUG-2

Cut : 
    2000 < total pe < 16000pe
    npeakspill=1 (use single interaction with >1000 pe )
    sqrt(x**2+y**2) < 300 cm
    abs(z) < 300 cm

Normalization between Data and MC : 
    Entry in profile histgram (After all cuts )

Vertical axis of profile : 
    Number of events / t / day