Prosečne GPS koordinate za poštanski broj 121-844: 37.563, 126.911

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Spisak gradova:
>> Seongsan 1(il)-dong/성산1동 121-844, Seoul/서울, Mapo-gu/마포구, 101-114/101-114, GPS koordinate: 37.56291,126.91112
>> Seongsan 1(il)-dong/성산1동 121-844, Seoul/서울, Mapo-gu/마포구, 586-588/586-588, GPS koordinate: 37.56292,126.91113
>> Seongsan 1(il)-dong/성산1동 121-844, Seoul/서울, Mapo-gu/마포구, 596/596, GPS koordinate: 37.56288,126.91109
>> Seongsan 1(il)-dong/성산1동 121-844, Seoul/서울, Mapo-gu/마포구, 60-93/60-93, GPS koordinate: 37.56291,126.91112