IGNF:WGS84MARTGDD - RRAF geographiques (dd)

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "GeographicCRS",
  "name": "RRAF geographiques (dd)",
  "datum": {
    "type": "GeodeticReferenceFrame",
    "name": "Reseau de Reference des Antilles Francaises 1991",
    "ellipsoid": {
      "name": "WGS 84",
      "semi_major_axis": 6378137,
      "inverse_flattening": 298.257223563
    }
  },
  "coordinate_system": {
    "subtype": "ellipsoidal",
    "axis": [
      {
        "name": "Geodetic longitude",
        "abbreviation": "Lon",
        "direction": "east",
        "unit": "degree"
      },
      {
        "name": "Geodetic latitude",
        "abbreviation": "Lat",
        "direction": "north",
        "unit": "degree"
      }
    ]
  },
  "scope": "NATIONALE A CARACTERE LEGAL",
  "area": "ANTILLES FRANCAISES",
  "bbox": {
    "south_latitude": 14.25,
    "west_longitude": -63.2,
    "north_latitude": 18.2,
    "east_longitude": -60.73
  },
  "id": {
    "authority": "IGNF",
    "code": "WGS84MARTGDD"
  }
}

{'crs_wkt': 'GEOGCRS["RRAF geographiques (dd)",DATUM["Reseau de Reference des '
            'Antilles Francaises 1991",ELLIPSOID["WGS '
            '84",6378137,298.257223563,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic '
            'longitude '
            '(Lon)",east,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic '
            'latitude '
            '(Lat)",north,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["NATIONALE '
            'A CARACTERE LEGAL"],AREA["ANTILLES '
            'FRANCAISES"],BBOX[14.25,-63.2,18.2,-60.73]],ID["IGNF","WGS84MARTGDD"]]',
 'geographic_crs_name': 'RRAF geographiques (dd)',
 'grid_mapping_name': 'latitude_longitude',
 'horizontal_datum_name': 'Reseau de Reference des Antilles Francaises 1991',
 'inverse_flattening': 298.257223563,
 'longitude_of_prime_meridian': 0.0,
 'prime_meridian_name': 'Greenwich',
 'reference_ellipsoid_name': 'WGS 84',
 'semi_major_axis': 6378137.0,
 'semi_minor_axis': 6356752.314245179}