Gjennomsnittlig GPS-koordinater for postnummer 01021: 42.77, 11.894

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Notering byer:
>> Acquapendente 01021, Lazio, Viterbo, GPS-koordinater: 42.7438,11.8642
>> Torre Alfina 01021, Lazio, Viterbo, GPS-koordinater: 42.75,11.95
>> Trevinano 01021, Lazio, Viterbo, GPS-koordinater: 42.8167,11.8667