The list of histogram points, each a 2-dimensional Pair where the first dimension
is the mean value (Double) of the centroid and second dimension is the count of points in
that centroid.
Aggregates all the minute bins prior to the current minute (because threads might be
updating the current minute bin while the method is invoked) and returns a list of the
distributions held within each bin.
Simple thread factory to be used with Executors.newScheduledThreadPool that allows
assigning name prefixes to all pooled threads to simplify thread identification during
troubleshooting.