Gjennomsnittlig GPS-koordinater for postnummer 78931-cedex: 48.893, 1.684
Notering byer:
>> Septeuil 78931-CEDEX, Île-de-France, Yvelines, Arrondissement de Mantes-la-Jolie, GPS-koordinater: 48.8925,1.6836
Notering byer:
>> Septeuil 78931-CEDEX, Île-de-France, Yvelines, Arrondissement de Mantes-la-Jolie, GPS-koordinater: 48.8925,1.6836