Prosečne GPS koordinate za poštanski broj n21: 51.625, -0.1

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Spisak gradova:
>> Grange Park N21, London, England, GPS koordinate: 51.625,-0.1
>> Southgate N21, London, England, GPS koordinate: 51.6167,-0.1
>> Winchmore Hill N21, London, England, GPS koordinate: 51.6333,-0.1