bin: p=3-6, pt=0.0-0.2

general
-------

99 pos tracks, 99 neg tracks
basically no problems
all iflag=0
tracks usually have close to all (more than 90%) of the potential points
   ==> very few lost points
8% of the tracks are v0 candidates that look also like honest 
 main-vertex tracks

positives
---------

v0 candidates, that look like good main vertex tracks: 
- most of them are VT1 only tracks
6  b=(-0.21 -0.02)
7  b=(0.32 0.03)
11 b=(0.29 -0.09)
26 b=(0.12 0.09)
63 b=(1.04 -1.12)
66 b=(-2.09 -0.45)
79 b=(0.29 -0.18)
83 b=(-0.18 -0.01)

63: looking at a/p ratio track 63 shouldn't have points in Vt1 and vt2 
    (as v0-candidate?!); but has a lot - perfectly fitting to the track!
    b=(1.04 -1.12) maybe a bit too big

70: doubtable ... split track?!
    a/p=(100%|-1%|-1%) but in VT2 and MTPC there is another track that could 
    be the second part of this one
    b=(-1.97 2.36)

74: VT1 only track with 11 points - but eventual some lost points
    ==> rather poor track

82: no potential points for MTPC calculated, but track goes through!


negatives
---------

v0 candidates, that look like good main vertex tracks:
- most of them are VT1 only tracks
11 b=(2.03 -1.41)
13 b=(-0.64 -0.29)
16 b=(0.06 0.03)
29 b=(-1.56 -0.09)
35 b=(-0.63 -0.07)
36 b=(-0.95 -0.19)
47 b=(1.66 0.30)
52 b=(0.74 -0.14)

4: some lost points and a very close second track - it seems these points 
   couldn't be given to any of them

12,34,38,62,85,92,94: no potential points for MTPC calculated, but track 
       goes through! (in all the cases - except track 62 where are lost 
       points close by in the MTPC - there are in fact no measured 
       points...)
  ==> something mixed up in the calculation?

49: split track? ... but MTPC part doesn't fit so nicely with vertex constraint