Gjennomsnittlig GPS-koordinater for postnummer 91018: 37.828, 12.786

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Notering byer:
>> Filci 91018, Sicilia, Trapani, GPS-koordinater: 37.8282,12.7862
>> Gorgazzo 91018, Sicilia, Trapani, GPS-koordinater: 37.8282,12.7862
>> Salemi 91018, Sicilia, Trapani, GPS-koordinater: 37.8231,12.8056
>> San Ciro 91018, Sicilia, Trapani, GPS-koordinater: 37.8282,12.7862
>> Ulmi 91018, Sicilia, Trapani, GPS-koordinater: 37.8333,12.7667