Gjennomsnittlig GPS-koordinater for postnummer 309-1703: 36.38, 140.243
Notering byer:
>> Koibuchi 309-1703, Ibarakiken, Nishiibarakiguntomobemachi, GPS-koordinater: 36.3798,140.2431
Notering byer:
>> Koibuchi 309-1703, Ibarakiken, Nishiibarakiguntomobemachi, GPS-koordinater: 36.3798,140.2431