Prosečne GPS koordinate za poštanski broj 690-812: 33.501, 126.518
Spisak gradova:
>> Samdo 1(il)-dong/삼도1동 690-812, Jeju-do/제주, Jeju-si/제주시, 503-534/503-534, GPS koordinate: 33.50143,126.51762
>> Samdo 1(il)-dong/삼도1동 690-812, Jeju-do/제주, Jeju-si/제주시, 560-569/560-569, GPS koordinate: 33.50134,126.51753
Spisak gradova:
>> Samdo 1(il)-dong/삼도1동 690-812, Jeju-do/제주, Jeju-si/제주시, 503-534/503-534, GPS koordinate: 33.50143,126.51762
>> Samdo 1(il)-dong/삼도1동 690-812, Jeju-do/제주, Jeju-si/제주시, 560-569/560-569, GPS koordinate: 33.50134,126.51753