Prosečne GPS koordinate za poštanski broj 630-821: 35.217, 128.574

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Spisak gradova:
>> Hoewon 1(il)-dong/회원1동 630-821, Gyeongsangnam-do/경남, Masan-si/마산시, 400-430/400-430, GPS koordinate: 35.21711,128.57362
>> Hoewon 1(il)-dong/회원1동 630-821, Gyeongsangnam-do/경남, Masan-si/마산시, 434-437/434-437, GPS koordinate: 35.21711,128.57362
>> Hoewon 1(il)-dong/회원1동 630-821, Gyeongsangnam-do/경남, Masan-si/마산시, 441/441, GPS koordinate: 35.21708,128.57359
>> Hoewon 1(il)-dong/회원1동 630-821, Gyeongsangnam-do/경남, Masan-si/마산시, 443-449/443-449, GPS koordinate: 35.21707,128.57358
>> Hoewon 1(il)-dong/회원1동 630-821, Gyeongsangnam-do/경남, Masan-si/마산시, 51-62/51-62, GPS koordinate: 35.2172,128.57371