Prosečne GPS koordinate za poštanski broj 630-815: 35.242, 128.574

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Spisak gradova:
>> Hapseong 1(il)-dong/합성1동 630-815, Gyeongsangnam-do/경남, Masan-si/마산시, 500-921/500-921, GPS koordinate: 35.24236,128.57359
>> Hapseong 1(il)-dong/합성1동 630-815, Gyeongsangnam-do/경남, Masan-si/마산시, 76-80/76-80, GPS koordinate: 35.24244,128.57367
>> Hapseong 1(il)-dong/합성1동 630-815, Gyeongsangnam-do/경남, Masan-si/마산시, 85-101/85-101, GPS koordinate: 35.24243,128.57366