Gjennomsnittlig GPS-koordinater for postnummer n81: 51.575, -0.08
Notering byer:
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Haringey N81,
London, England, Haringey London Boro, GPS-koordinater: 51.5833,-0.0833
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Newham N81,
London, England, Newham London Boro, GPS-koordinater: 51.5663,-0.0768