Prosečne GPS koordinate za poštanski broj 306-0104: 36.171, 139.845
Spisak gradova:
>> Onna 306-0104, Ibarakiken, Sashimagunsanwamachi, GPS koordinate: 36.1708,139.8451
Spisak gradova:
>> Onna 306-0104, Ibarakiken, Sashimagunsanwamachi, GPS koordinate: 36.1708,139.8451