Lately we have been experimenting with Gimbal beacons, a popular iBeacon product. The most obvious application for the technology is to affect some change in an app depending on which beacon the user is closest to. In order for this to work well, the app needs to know which beacon has the strongest signal strength.
Unfortunately, many factors influence the signal strength, not just range. We also found that even while stationary, the signal strength varies greatly and oftentimes a beacon that was farther away would register as closer. This sounds like a job for averages.
Here is the raw data from two beacons, standing slightly closer to the blue beacon.