Source: EPSG:9530 — RGFG95 + NGG1977 height
compound horizontal + vertical reference system · Area of use: French Guiana - onshore
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +geoidgrids=fr_ign_ggguy15.tif +geoid_crs=WGS84 +vunits=m +no_defs +type=crsMore about EPSG:9530 →