Coordinate GPS medie per codice postale 17200: 45.649, -1.02

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lista delle città :
>> Royan 17200, Poitou-Charentes, Charente-Maritime, Arrondissement de Rochefort, coordinate GPS: 45.6285,-1.0281
>> Saint-Sulpice-de-Royan 17200, Poitou-Charentes, Charente-Maritime, Arrondissement de Rochefort, coordinate GPS: 45.6704,-1.0125