Average GPS coordinates for postcode e20: 51.547, -0.01

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Listing cities:
>> Hackney E20, London, England, Hackney London Boro, GPS coordinates: 51.5468,-0.0096
>> Waltham Forest E20, London, England, Waltham Forest London Boro, GPS coordinates: 51.5468,-0.0096
>> Tower Hamlets E20, London, England, Tower Hamlets London Boro, GPS coordinates: 51.5468,-0.0096
>> Newham E20, London, England, Newham London Boro, GPS coordinates: 51.5468,-0.0096