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Jonas earned this badge 4 times
jan 9 '11 at 16:59Is GPS more accurate on specific hours of the day?
nov 19 '10 at 20:55How correct is the “Accuracy” value given by GPS devices?
oct 20 '10 at 2:29Is there a decent open source map-editor?
jul 28 '10 at 0:08Is there any way I can use a Key-Value store for geospatial data?