Gjennomsnittlig GPS-koordinater for postnummer 306-0304: 36.088, 139.758
Notering byer:
>> Koushu 306-0304, Ibarakiken, Sashimagungokamachi, GPS-koordinater: 36.0878,139.758
Notering byer:
>> Koushu 306-0304, Ibarakiken, Sashimagungokamachi, GPS-koordinater: 36.0878,139.758