Prosečne GPS koordinate za poštanski broj 690-821: 33.51, 126.5

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Spisak gradova:
>> Yongdam 2(i)-dong/용담2동 690-821, Jeju-do/제주, Jeju-si/제주시, 356-500/356-500, GPS koordinate: 33.50969,126.50005
>> Yongdam 2(i)-dong/용담2동 690-821, Jeju-do/제주, Jeju-si/제주시, 591-683/591-683, GPS koordinate: 33.50968,126.50004
>> Yongdam 2(i)-dong/용담2동 690-821, Jeju-do/제주, Jeju-si/제주시, 896-1645/896-1645, GPS koordinate: 33.50965,126.50001