| Int_t | fDebugLevel | debug level |
| Double_t | fFitLeverArm | Lever arm calculated from clusters in fitkernel |
| Int_t | fFitNcls | number of TPC clusters successful in propagation (mean of the two propagation: upwards and downwards) |
| Double_t | fImpactD | 2d impact parameter |
| Double_t | fImpactZ | z of impact parameter |
| AliExternalTrackParam* | fIniTrackparLow | track param of lower track by MakeSeed |
| AliExternalTrackParam* | fIniTrackparUp | track param of upper track by MakeSeed |
| TVector3 | fInnerClusterLow | xyz of the inner most TPC trackpoint of the Lower track |
| TVector3 | fInnerClusterUp | xyz of the inner most TPC trackpoint of the Upper track |
| Bool_t | fKswap | true if should be / already be swapped |
| Double_t | fLeverArm | transverse difference between upper most and lower most clusters |
| Int_t | fMissNcls | number of TPC clusters fail in propagation (sum of the two propagation) |
| Double_t | fPreChi2 | Predicted chi2/nfit over the two propagation |
| Int_t | fRowStartShift | row start shift |
| Int_t | fRowStep | row step |
| AliTPCseed* | fSeedLow | TPC seed of lower track |
| AliTPCseed* | fSeedUp | TPC seed of upper track |
| Int_t | fStatus | status for CombineESDtracks/CombineTPCseeds: 0-successful, otherwise fail |
| TTreeSRedirector* | fStreamer | !debug streamer |
| AliExternalTrackParam* | fTrackparLow | track param of lower track |
| AliExternalTrackParam* | fTrackparUp | track param of upper track |
| Double_t | fXMax | cluster X max |
| Double_t | fXMin | cluster X min |