Průměrné GPS souřadnice pro psČ 350-811: 36.547, 126.669

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Seznam měst:
>> Hongdong-myeon/홍동면 350-811, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Gujeongri/구정리, GPS souřadnice: 36.54747,126.66881
>> Hongdong-myeon/홍동면 350-811, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Unwolli/운월리, GPS souřadnice: 36.54737,126.66871
>> Hongdong-myeon/홍동면 350-811, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Wolhyeonri/원천리, GPS souřadnice: 36.54748,126.66882
>> Hongdong-myeon/홍동면 350-811, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Woncheonri/월현리, GPS souřadnice: 36.54738,126.66872