Spectra Precision Survey Pro CE v3.6 User Manual - Manual (Page 352)

Curve Menu
R-195
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).