CREATE TABLE table_79974 ("Rank" FLOAT, "Lane" FLOAT, "Name" TEXT, "Nationality" TEXT, "Time" TEXT)

What was St phan Perrot rank average?
SELECT AVG("Rank") FROM table_79974 WHERE "Name" = 'stéphan perrot'
SELECT AVG("Rank") FROM "table_79974" WHERE "Name" = 'stéphan perrot'