Gjennomsnittlig GPS-koordinater for postnummer 350-891: 36.512, 126.682

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Notering byer:
>> Janggok-myeon/장곡면 350-891, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Dosanri/가송리, GPS-koordinater: 36.5122,126.68231
>> Janggok-myeon/장곡면 350-891, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Gasongri/도산리, GPS-koordinater: 36.5121,126.68221
>> Janggok-myeon/장곡면 350-891, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Jukjeonri/신동리, GPS-koordinater: 36.51208,126.68219
>> Janggok-myeon/장곡면 350-891, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Sindongri/죽전리, GPS-koordinater: 36.51208,126.68219