CREATE TABLE table_22063 ("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 original air date for ai% for 83
SELECT "Original air date" FROM table_22063 WHERE "AI (%)" = '83'
SELECT "Original air date" FROM "table_22063" WHERE "AI (%)" = '83'