Coordinate GPS medie per codice postale al3: 51.815, -0.418

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lista delle città :
>> Church End AL3, Hertfordshire, England, coordinate GPS: 51.7798,-0.3762
>> St Stephens AL3, Hertfordshire, England, coordinate GPS: 51.8379,-0.4399
>> Redbourn AL3, Hertfordshire, England, coordinate GPS: 51.799,-0.3959
>> Cheverell's Green AL3, Hertfordshire, England, coordinate GPS: 51.8379,-0.4399
>> St Albans AL3, Hertfordshire, England, coordinate GPS: 51.75,-0.3333
>> Childwick Green AL3, Hertfordshire, England, coordinate GPS: 51.8379,-0.4399
>> Flamstead AL3, Hertfordshire, England, coordinate GPS: 51.8197,-0.4371
>> Trowley Bottom AL3, Hertfordshire, England, coordinate GPS: 51.8379,-0.4399
>> Markyate AL3, Hertfordshire, England, coordinate GPS: 51.8385,-0.4635