CREATE TABLE table_1804 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Prod. code" CLOB, "Viewers  ( millions ) " CLOB)

What's the series number of the episode with production code 329?
SELECT "No. in series" FROM table_1804 WHERE "Prod. code" = '329'
SELECT "No. in series" FROM "table_1804" WHERE "Prod. code" = '329'