A DeltaPresenceEstimationHistogramBucket message with the
following values: min_probability: 0.1 max_probability: 0.2 frequency:
42 means that there are 42 records for which δ is in [0.1, 0.2). An
important particular case is when min_probability = max_probability = 1:
then, every individual who shares this quasi-identifier combination is
in the dataset.
Always greater than or equal to min_probability.
Sample of quasi-identifier tuple values in this bucket. The
total number of classes returned per bucket is capped at 20.
