I'm using a Garmin 64cs to locate property monuments, frequently deep in the woods. I'm experimenting with Waypoint Averaging and some of my distance from are off by 25-60' even after as many as 8 samples. Others are dead on (0' off). One possibility is that I averaged against the wrong waypoint resulting in an outlier to the dataset screwing up the average.

My question is how does averaging actually work in the 64cs? i.e. is it maintaining a weighted average of a single LAT/LONG and how many times it has been included in the average, or does it maintain all the individual samples and recalc the average as new points are added? If the latter, is it possible to see/edit those individual waypoints to see if there is an outlier? BaseCamp doesn't even seem to have the sample size.