2015-03-13, 08:27
Knowing you need at least 3 for triangulation. And from there on it gets more accurate to a point with more. But for me if you have choice of place. Get real quality sites with lowest possible noise so readings even over longer stretches are clean and accurate. Then try to see how to spread them best so crossing of all cover best the area you want and better less and good then trying to have it all at once. Over time other stations can come close up the holes in the grid. My 2 cents
Stations: 1476