This statistical property tracks the occurrences of pool numbers at individual ticket positions.
When analyzing e.g. the latest draw in Expert Lotto 6/49 Demo Lottery with winning numbers 23-29-36-42-44-47-[7] then column Position 1 in e.g. Winning Numbers Properties window shows value of 23. Column Position 2 shows value of 29 because the second ticket number is 29 etc.See also Numbers at Positions ticket filter and Ticket Numbers statistics.