Variable EPSG_9663`Const`

EPSG_9663: "+vunits=m +no_defs +type=crs" = '+vunits=m +no_defs +type=crs'

EH2000 height

CRS-VERTCRS [9663]
Area: Estonia - onshore.
Unit: metre
Accuracy: null
BBOX: 59.75,21.74,57.52,28.2