Gjennomsnittlig GPS-koordinater for postnummer 300-0004: 36.133, 140.185
Notering byer:
>> Koyamazaki 300-0004, Ibarakiken, Tsuchiurashi, GPS-koordinater: 36.1329,140.1846
Notering byer:
>> Koyamazaki 300-0004, Ibarakiken, Tsuchiurashi, GPS-koordinater: 36.1329,140.1846