Gjennomsnittlig GPS-koordinater for postnummer 350-903: 36.523, 126.658

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Notering byer:
>> Gwangcheon-eup/광천읍 350-903, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Daepyeongri/내죽리, GPS-koordinater: 36.52308,126.65792
>> Gwangcheon-eup/광천읍 350-903, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Naejukri/대평리, GPS-koordinater: 36.52311,126.65795
>> Gwangcheon-eup/광천읍 350-903, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Unyongri/운용리, GPS-koordinater: 36.52312,126.65796
>> Gwangcheon-eup/광천읍 350-903, Chungcheongnam-do/충남, Hongseong-gun/홍성군, Wollimri/월림리, GPS-koordinater: 36.52318,126.65802