Muons(A-Stub)

 These are the same plots as MUONS(ALL) except for A-stubs. A-stubs have 
 no B or C-layer hits.

 N
 -----
 The number of Astub muons of all kinds. 

 PT
 -----
 The pT (GeV/c) of A-stub muons.  This comes from the tracker if the muon is matched.
 I don't know how the pT would be known, otherwise.

 ETA
 -----
 Eta of A-stub muons. The peaks near |eta|=1 are due to background scattered
 into the central region from the exit of the calorimeter.

 PHI
 -----
 Phi of A-stub muons. The deficit at phi~5 is because of there is 16% of phi 
 in central region which supports the calorimeter. The are no A-layer detectors 
 there.

 CHISQ
 -----
 The chi-sq of the track fit.  

 CHISQLOC
 --------
 The chi-sq of the fit for the muon local track (muon hits only).

 E33
 -----
 The energy deposited in a 3x3 cone in the calorimeter (corresponding to
 delta eta x delta phi of 0.3 x 0.3) centered around the expected position
 the muon enters it.  Muons deposit between 1 and  2.5+ GeV in the 
 calorimeter depending on the angle it goes through. 

 HALO
 -----
 The energy in a ring of inner radius xxx and ounter radius yyy.
 This helps determine muon isolation.

 W HITS A
 --------
 The number of PDT and/or MDT hits in the A-layer. Most of
 the A-layer has 4 decks. The central bottom has 3 decks.
 Parts of octant 5 & 6 have no A-layer coverage at all.

 
 W HITS BC
 ---------
 There are no BC hits on AStubs.

 SCINT HITS A
 ------------
 The number of A-layer scintillator hits.

 SCINT HITS BC
 -------------
 There are no BC hits on AStubs.