CREATE TABLE table_22531 ("Series #" TEXT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Prod. code" FLOAT)

What is the production code number for episode named 'chilly scenes of winter golf'?
SELECT MIN("Prod. code") FROM table_22531 WHERE "Title" = 'Chilly Scenes of Winter Golf'
SELECT MIN("Prod. code") FROM "table_22531" WHERE "Title" = 'Chilly Scenes of Winter Golf'