Keskmine GPS koordinaadid postiindeks co13: 51.836, 1.225

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videod linnad:
>> Great Holland CO13, Essex, England, GPS koordinaadid: 51.8282,1.2096
>> Frinton-on-Sea CO13, Essex, England, GPS koordinaadid: 51.8388,1.2463
>> Kirby Cross CO13, Essex, England, GPS koordinaadid: 51.8418,1.2188
>> Kirby le Soken CO13, Essex, England, GPS koordinaadid: 51.8362,1.2249