Average GPS coordinates for postcode e4: 51.63, 0.001

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Listing cities:
>> Sewardstone E4, London, England, GPS coordinates: 51.6303,0.0005
>> Chingford E4, London, England, GPS coordinates: 51.6303,0.0005
>> Chingford Hatch E4, London, England, GPS coordinates: 51.6303,0.0005
>> Highams Park E4, London, England, GPS coordinates: 51.6303,0.0005
>> Gilwell Park E4, London, England, GPS coordinates: 51.6303,0.0005
>> Chingford Green E4, London, England, GPS coordinates: 51.6303,0.0005
>> Hale End E4, London, England, GPS coordinates: 51.6303,0.0005