LotteryNumber Spacing & Clustering
Two things neither our AC value nor span stats capture on their own: sort a drawing's numbers and look at the gaps between consecutive ones — the tightest gap, the widest gap, and how many separate "clusters" of touching numbers there were (not just how many adjacent pairs, which over- or under-counts a run of 3 or more).
Average smallest gap
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Average widest gap
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How Many Clustered Groups Per Drawing
Gap here means the difference between two consecutively-ranked numbers once a drawing's numbers are sorted smallest to largest — e.g. for 5, 12, 13, 14, 40, the gaps are 7, 1, 1, 26, so the smallest gap is 1 and the widest is 26.
Clustered group counts a run of touching numbers (like 12, 13, 14) as one group, not three separate adjacent pairs — verified against hand-built test cases (an isolated number counts as zero groups, not one, and a single run of 5 consecutive numbers counts as exactly one group, not four pairs) before publishing. This is a different lens from the repeat, adjacent & isolated tool, which compares a drawing to the previous one — this looks only within a single drawing's own numbers. Purely descriptive; see how lottery odds actually work.