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+/- 2 meters = +/- 4 meters Traditional Cache

This cache has been archived.

ertyu: The fire has claimed the cache, couldn't find any remnants of it. The hiding spot has also been damaged so this caches day is done.

Hidden : 09/24/2010
1.5 out of 5
2 out of 5

Size: Size:   small (small)

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Geocache Description:

An homage to Ruzter's +/- 4 meters = +/- 8 meters.

Located in Assiniboine Forest, this cache has been set up as a demonstration of the accuracy of GPS. Everyone finding the cache is asked to log a waypoint of where you find the cache.

When using 2 GPSrs to mark a location (with good reception), tests have shown that sometimes the coordinates are remarkably close and sometimes they will vary more that double the "accuracy" shown by the perfectly functioning GPSrs. This is due to the random nature of which direction the GPSr is off the actual coordinates. If the 2 GPSrs happen to have an error in the same direction, then the coordinates are very close. If the 2 GPSrs happen to error in opposite directions, the coordinates then appear much further apart.

For example if 2 GPSrs mark a waypoint with 4 meters accuracy, approximately 75% of the time the marks could be within 6 meters, often much better. But occasionally the marks will be 8 meters apart, with nothing changing except the luck of the draw.

If you go to find this cache, you are asked to:

1. find the cache
2. mark a waypoint at the cache location
3. post your find on this page including your waypoint (To log a waypoint, just check the waypoint checkbox when you are typing your log and a set of boxes appear for you to enter your coordinates)
4. log your coordinates in the chart: coordinate entry form

Feel free to come back to this cache on as many different days as you like to see how a single GPSr can vary on different days!

Entered results:

Additional Hints (No hints available.)