bin: p=1-2, pt=1.1-1.3

# general comment:
------------------

One should be careful in using a cut on the number of potential points, because
with this e.g. good tracks of kaons that decayed in flight would be removed!

# positives (75 tracks, out of them only 6(!) have iflag=0)
-----------------------------------------------------------

concerning bad tracks:
iflag 3 (probably mostly (split) muons) : 4,7,8,9,12,,14,18,19,20,21,22,24,26,
                                          27,35,37,41,42,43,46,47,49,53,56,57,
                                          59,66,68,69,71,73,74
iflag 4 (probably mostly (split) muons) : 1,2,3,5,6,10,11,13,15,16,23,28,29,31,
                                          32,33,34,36,38,39,40,44,48,50,51,54,
                                          55,60,61,62,63,64,65,67,70,72,75
big (bx,by) of green line : 1-16,18-24,26-29,31-44,46-51,53-57,59-75 
                            ...that are all tracks except the good ones
extra chaotic tracks      : 7,8,14,22,24,66,68
  (particles going more or less parallel to x through the TPCs)

concerning good tracks:
good split tracks      : none
missing points         : 25
wrongside tracks       : 17,25,30,45
rightside tracks       : 52,58


(Split) muons could be removed with a cut on (bx,by), but they have anyway no 
momentum asigned, usually they consist out of track fragments and/or are very short.

Good tracks are VT1 only mostly wrongside tracks that just cross the front corner. 
But even with their 9 points in average the fits look reasonable (3 tracks had only 8 npoints!).

# negatives (50 tracks, out of them 0(!) have iflag=0)
----------------------------------------------------------

concerning bad tracks:
iflag 3 : 1,6,7,8,9,12,13,15,18,19,20,24,27,28,29,30,31,32,33,36,37,
          40,41,44,46,47,49
iflag 4 : 2,3,4,5,10,11,14,16,17,21,22,23,25,26,34,35,38,39,42,43,45,48
extra chaotic tracks: 1,(46),50

Again all iflag=3,4 tracks have a big (bx,by) of the green line, are very short
and/or split and look very often like muons going through.