CREATE TABLE table_25517 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT)

The episode which originally aired on February 11, 2005 had which episode # of the season?
SELECT "No. in season" FROM table_25517 WHERE "Original air date" = 'February 11, 2005'
SELECT "No. in season" FROM "table_25517" WHERE "Original air date" = 'February 11, 2005'