CREATE TABLE table_31040 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( million ) " TEXT)

What is the least amount in each season?
SELECT MIN("No. in season") FROM table_31040
SELECT MIN("No. in season") FROM "table_31040"