Spectra Precision Survey Pro v4.5 Ranger Reference Manual - Manual (Page 401)

Curve Menu
R-393
Results
PVC sta.: is the station at the PVC.
PVI sta.: is the station at the PVI.
PVT sta.: is the station at the PVT.
elev.: is the elevation for the respective point.
Hi/Lo sta.: is the station where the vertical curve has a tangent
equal to zero (the crest of the curve).