CREATE TABLE table_58230 ("Production no." FLOAT, "Episode no." FLOAT, "Original Airdate" TEXT, "Episode Title" TEXT, "Host" TEXT)

What is the episode number of the episode that originally aired on February 4, 2008?
SELECT "Episode no." FROM table_58230 WHERE "Original Airdate" = 'february 4, 2008'
SELECT "Episode no." FROM "table_58230" WHERE "Original Airdate" = 'february 4, 2008'