CREATE TABLE table_24933 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( million ) " CLOB)

Name the viewers for production code being 3x6706
SELECT "U.S. viewers (million)" FROM table_24933 WHERE "Production code" = '3X6706'
SELECT "U.S. viewers (million)" FROM "table_24933" WHERE "Production code" = '3X6706'