Gracias Gerardo;

Since you appear to live in Argentina, you may be interested in the fact that the Google Earth maps available at the highest resolution in the pampas area seem to be off by perhaps 50 m or so. We have carefully surveyed the position of our detectors in the field, and where the photos show actual deployed detectors (e.g. if you zoom in on tank "Oscar") you will notice that our placemarks are shifted from the location shown on the photo. This is because the photo used as a background image is off...

Saludos,

Stephane