Meaning of GTrackChunk content ID's.

111 - central CFT fitted outside to in
113 - central CFT r-phi only
121 - overlap CFT fitted outside to in
101 - full CFT fitted outside to in
201 - CFT+SMT fitted outside to in
301 - SMT forward tracks fitted outside to in
311 - SMT gap tracks
401 - all SMT+CFT tracks fitted outside to in

1000 + the above is the same for gtr_mcfind.

2000 + the above is the same for vetexreco fake GTrack's.