The statistics show how many History differences repeat in the same Level from previous draws. The statistics are given for repeats from a single previous draw and for repeats from 5, 10, 15, 30 and 50 previous draws.
For example draw 2010/27 Sun 1st in the demo Expert Lotto 6/49 lottery has two History differences repeated from the previous five draws. The History difference 14 in Level 3 repeats from draw 2010/26 Sun 2nd and History difference 6 in Level 6 repeats from the previous draw 2010/27 Wed 2nd.
These statistics are available in summary form and also as per-ticket properties.