More facts (since & including 1979):
-- The closest to perfection (all 10 #1 seeds winning) were years 1979 and 1988 when seven #1 seeds won and three #1 seeds came in 2nd.
-- The closest to perfection (all 10 #1 seeds winning) over the past 10 years were 2012 (seven #1's won, two #1's came in 2nd, one #1 came in 4th) and 2013 (five #1's won, and five #1's came in 2nd) (note: the math I used show these years tied)
-- The highest ever (#1's winning) is seven (7). Happened ten times since 1979.
-- The lowest ever (#1's winning) is two (1981), followed by three (1982, 2014, 2021)
-- During the years 1979-2021, seven individuals seeded below #8 have won championships. Three of those happened at the last 10 NCAA Championships.