+ Double_t GetMuonMagFieldScale() const {return fHeader ? fHeader->GetMuonMagFieldScale() : -999.;}
+ Double_t GetDiamondX() const {return fHeader ? fHeader->GetDiamondX() : -999.;}
+ Double_t GetDiamondY() const {return fHeader ? fHeader->GetDiamondY() : -999.;}
+ Double_t GetDiamondZ() const {return fHeader ? fHeader->GetDiamondZ() : -999.;}
+ void GetDiamondCovXY(Float_t cov[3]) const {cov[0]=-999.; if(fHeader) fHeader->GetDiamondCovXY(cov);}
+ Double_t GetSigma2DiamondX() const {return fHeader ? fHeader->GetSigma2DiamondX() : -999.;}
+ Double_t GetSigma2DiamondY() const {return fHeader ? fHeader->GetSigma2DiamondY() : -999.;}
+ Double_t GetSigma2DiamondZ() const {return fHeader ? fHeader->GetSigma2DiamondZ() : -999.;}