`DistanceStat` represents the statistics of the
distance samples from this beacon in `CricketDaemon`'s history
window. It contains the following fields:

public double dist; public double median; public double mean; public double mode; public double max; public double min; public double stddev; public double variance; public ArrayList samples;

`dist`is the filtered distance estimate computed by`CricketDaemon`. By default, this is the mode value of the distance samples collected in the history window.`median`is the median value of the distance samples collected in the history window.`mean`is the mean value of the distance samples collected in the history window.`mode`is the mode value of the distance samples collected in the history window.`max`is the maximum value of the distance samples collected in the history window.`min`is the minimum value of the distance samples collected in the history window.`stddev`is the standard deviation of the distance samples collected in the history window.`variance`is the variance of the distance samples collected in the history window.`samples`is an`ArrayList`of`Samples`containing all the measured distance samples from a beacon currently in`CricketDaemon`'s history window.