fEX = TMath::Sqrt(globErr[0][0]);
fEY = TMath::Sqrt(globErr[1][1]);
fEZ = TMath::Sqrt(globErr[2][2]);
// copy of other data-members
fEX = TMath::Sqrt(globErr[0][0]);
fEY = TMath::Sqrt(globErr[1][1]);
fEZ = TMath::Sqrt(globErr[2][2]);
// copy of other data-members