• Ellipsoidal 3D CS. Axes: longitude, latitude, ellipsoidal height. Orientations: east, north, up. UoM: rad, rad, m.

  EPSG:6431
  
  

• Affine 3D CS. Axes: northing, easting, ellipsoidal height (X,Y,h). Orientations: north, east, up. UoM: m.

  EPSG:1046
  
  

• Cartesian 3D CS (ellipsoid-based Topocentric). Axes: easting, northing, topocentric height (U,V,W). Orientations: east, north, up. UoM: m.

  EPSG:4461
  
  

• Cartesian 3D CS (gravity-related Topocentric). Axes: plant E, Plant N, height (x,y,z). Orientations: east, north, up. UoM: m.

  EPSG:1032
  
  

• Cartesian 3D CS (geocentric). Axes: geocentric X Y Z. Orientations: X and Y in equatorial plane, X positive through intersection with prime meridian, Y through 0°N 90°E. Z axis parallel to mean earth rotation axis and positive towards North Pole. UoM: m.

  EPSG:6500
  
  

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