The distance between the average location and the reference point is 3.18 meters. This lands in the 68% buffer. This tells me that the gps data averages to be within 68% of the actual point location.
For horizontal accuracy the distance from the average and the reference was 3.14 meters. For the results of the horizontal precision looking at the 68% buffer value the distance is 4.4 meters. These 2 values are very close giving a difference of 1.26 meter. This could mean that the gps data is more accurate with horizontal accuracy than it is precise.
Horizonal accuracy and precision are measured by first getting the average of all of the points longitudes and latitudes. This will leave you with one average waypoint. To get the horizontal precision you will find the difference between the average waypoints longitudes and latitudes and all of the gps points longitudes and latitudes. you will then section these differences out into percentiles, 50th, 68th, and 95th. Using the percentiles you create buffers around the average points. the get the Horizontal accuracy you find the distance between the actual point location and the average of all the gps points.
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