Ellipsoidal

2D Axes: latitude, longitude. Orientations: north, east. UoM: degree

Ellipsoidal::fromSRID(Ellipsoidal::EPSG_2D_AXES_LATITUDE_LONGITUDE_ORIENTATIONS_NORTH_EAST_UOM_DEGREE)
Ellipsoidal::fromSRID('urn:ogc:def:cs:EPSG::6422')

Coordinates referenced to this CS are in degrees. Any degree representation (e.g. DMSH, decimal, etc.) may be used but that used must be declared for the user by the supplier of data. Used in geographic 2D coordinate reference systems.

2D Axes: latitude, longitude. Orientations: north, east. UoM: grads.

Ellipsoidal::fromSRID(Ellipsoidal::EPSG_2D_AXES_LATITUDE_LONGITUDE_ORIENTATIONS_NORTH_EAST_UOM_GRADS)
Ellipsoidal::fromSRID('urn:ogc:def:cs:EPSG::6403')

Used in geographic 2D coordinate reference systems.

2D Axes: longitude, latitude. Orientations: east, north. UoM: degree

Ellipsoidal::fromSRID(Ellipsoidal::EPSG_2D_AXES_LONGITUDE_LATITUDE_ORIENTATIONS_EAST_NORTH_UOM_DEGREE)
Ellipsoidal::fromSRID('urn:ogc:def:cs:EPSG::6424')

Used in geog2D CRSs for some web mapping: CS code 6422 recommended. Coordinates referenced to this CS are in degrees. Any degree representation (e.g. DMSH, decimal, etc.) may be used but that used must be declared for the user by the supplier of data.

3D Axes: latitude, longitude, ellipsoidal height. Orientations: north, east, up. UoM: degree, degree, metre.

Ellipsoidal::fromSRID(Ellipsoidal::EPSG_3D_AXES_LATITUDE_LONGITUDE_ELLIPSOIDAL_HEIGHT_ORIENTATIONS_NORTH_EAST_UP_UOM_DEGREE_DEGREE_METRE)
Ellipsoidal::fromSRID('urn:ogc:def:cs:EPSG::6423')

Horizontal coordinates referenced to this CS are in degrees. Any degree representation (e.g. DMSH, decimal, etc.) may be used but that used must be declared for the user. Used in geographic 3D coordinate reference systems.

3D Axes: longitude, latitude, ellipsoidal height. Orientations: east, north, up. UoM: degree, degree, metre.

Ellipsoidal::fromSRID(Ellipsoidal::EPSG_3D_AXES_LONGITUDE_LATITUDE_ELLIPSOIDAL_HEIGHT_ORIENTATIONS_EAST_NORTH_UP_UOM_DEGREE_DEGREE_METRE)
Ellipsoidal::fromSRID('urn:ogc:def:cs:EPSG::6426')

Used in some geographic 3D CRSs for web mapping. CS code 6423 recommended instead. Horizontal coordinates referenced to this CS are in degrees. Any degree representation (e.g. DMSH, decimal, etc.) may be used but that used must be declared for the user.