CREATE TABLE table_22066 ("Story No." TEXT, "Episode" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "UK viewers  ( million ) " TEXT, "AI  ( % ) " FLOAT, "Original air date" TEXT, "Production code" TEXT)

Name the least ai %
SELECT MIN("AI (%)") FROM table_22066
SELECT MIN("AI (%)") FROM "table_22066"