Gjennomsnittlig GPS-koordinater for postnummer cm99: 51.736, 0.47
Notering byer:
>> Chelmsford CM99, Essex, England, Chelmsford District (B), GPS-koordinater: 51.7357,0.4696
Notering byer:
>> Chelmsford CM99, Essex, England, Chelmsford District (B), GPS-koordinater: 51.7357,0.4696