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postnummer (9 elementer):
DL1 (6)
DL10 (19)
DL11 (40)
DL12 (28)
DL13 (27)
DL14 (15)
DL15 (8)
DL16 (5)
DL17 (7)
Gjennomsnittlig GPS-koordinater for postnummer dl1: 54.554, -1.53

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Notering byer:
>> Coatham Mundeville DL1, County Durham, England, GPS-koordinater: 54.58,-1.5565
>> Barmpton DL1, County Durham, England, GPS-koordinater: 54.5554,-1.5151
>> Haughton Le Skerne DL1, County Durham, England, GPS-koordinater: 54.5385,-1.5191
>> Great Burdon DL1, County Durham, England, GPS-koordinater: 54.5385,-1.5191
>> Eastbourne DL1, County Durham, England, GPS-koordinater: 54.5299,-1.5382
>> Brafferton DL1, County Durham, England, GPS-koordinater: 54.5837,-1.5309