Gjennomsnittlig GPS-koordinater for postnummer 3640-170: 40.933, -7.55

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Notering byer:
>> Lapa 3640-170, Viseu, Sernancelhe, Ferreira, GPS-koordinater: 40.9333,-7.55
>> Moinhos do Vouga 3640-170, Viseu, Sernancelhe, Ferreira, GPS-koordinater: 40.9333,-7.55
>> Quintela 3640-170, Viseu, Sernancelhe, Ferreira, GPS-koordinater: 40.9333,-7.55
>> Senhora da Lapa 3640-170, Viseu, Sernancelhe, Ferreira, GPS-koordinater: 40.9333,-7.55