protected:
AliTRDgtuParam *fGtuParam; //!
- const AliTRDtrackletBase *fTracklet; // always points to a valid tracklet
+ AliTRDtrackletBase *fTracklet; // pointer to the underlying tracklet
Int_t *fSubChannel; //! [AliTRDgtuParam::GetNZChannels()]
Bool_t fAssignedZ; // tracklet assigned to a Z-channel