Unique agency IDAbbreviationFull nameCountryStation(s)
GISGISGeodetic Institute of SloveniaSlovenia (SVN)
GKUGKUGeodetic and Cartographic Institute BratislavaSlovakia (SVK)
GOPGOPGeodetic Observatory Pecny, RIGTCCzechia (CZE)
GPUGPUGEOSERVIS PULA d.o.o.Croatia (HRV)
GRAFCANGRAFCANCartográfica de Canarias, S.A.Spain (ESP)
GURSGURSThe Surveying and Mapping Authority of the Republic of SloveniaSlovenia (SVN)
GVEJGVEJGobierno Vasco - Eusko JaurlaritzaSpain (ESP)
GeoTerraceIGDGInstitute of GeodesyUkraine (UKR)
IAAIAAInstitute of Applied AstronomyRussian Federation (the) (RUS)