Minuit VF	KFV	PPV	PPV + fitter
Num Vertices
Num Tracks per event
Num Tracks per vertex
Vertex X
Vertex Y
Vertex Z
Vertex Error X
Vertex Error Y
Vertex Error Z

Comparison of total error magnitude of reconstructed vertex position. The data are from a Run13 W simulation without pile-up. The vertex is reconstructed without (left) and with (right) proposed PPV fitter

PPV as is	PPV w/ fitter

PPV	KFV	Minuit