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Latest map data versions are listed below:
North American maps: GRD_ALK.NA 2020.03
European maps: GRD_NT.EU 2020.02
Africa maps: GRD_NT.AF 2020.01
Middle Eastern maps: GRD_NT.ME 2020.02
Asia map: GRD_NT.AS 2020.02
Australasia maps: GRD_NT.OC 2020.2
South America map: GRD_NT.SA 2020.02