void CreateLookupTableSinglePhi(AliTPCCorrection &tpcCorr, Int_t iPhi, Float_t stepSize=5.);
void CreateLookupTableFromResidualDistortion(THn &resDist);
+ void CreateResidual(AliTPCCorrection *distortion, AliTPCCorrection* correction);
void MergePhiTables(const char* files);