These statistics track how many numbers from analyzed draws/tickets have unique History number difference value in a given Level. A ticket number has unique History difference if it appears alone on a row Segmentation table for given Level.
For example the winning numbers of the latest draw in Expert Lotto
6/49 Demo Lottery look like this in Segmentation table for Level 0 of
Numbers 23 and 29 have the same History difference of 3 so there are only 5 numbers with unique History number difference value in that draw.
Summary analysis of Unique Number Differences of 10 latest draws in that lottery then shows that the most frequent count of numbers with unique differences is 5 numbers as it was found in five of the analyzed draws.
See also Unique Number Differences filter.
These statistics are available in summary form and also as per-ticket properties.