Ellipsoid: Clarke 1880 (IGN)
Prime meridian: Greenwich
Data source: EPSG
Information source: IGN Paris
Revision date: 1999-12-09
Scope: Topographic mapping.
Area of use: Guinea - onshore.
Definition: OGC Well Known Text
DATUM["Dabola_1981", SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627, AUTHORITY["EPSG","7011"]], AUTHORITY["EPSG","6155"]]
Definition: OGC Well Known Text 2 (2019)
DATUM["Dabola 1981", ELLIPSOID["Clarke 1880 (IGN)",6378249.2,293.466021293627, LENGTHUNIT["metre",1]], ID["EPSG",6155]]
Definition: ESRI Well Known Text
DATUM["D_Dabola_1981", SPHEROID["Clarke_1880_IGN",6378249.2,293.466021293627]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Dabola 1981", "ellipsoid": { "name": "Clarke 1880 (IGN)", "semi_major_axis": 6378249.2, "semi_minor_axis": 6356515 }, "scope": "Topographic mapping.", "area": "Guinea - onshore.", "bbox": { "south_latitude": 7.19, "west_longitude": -15.13, "north_latitude": 12.68, "east_longitude": -7.65 }, "id": { "authority": "EPSG", "code": 6155 } }