How man fans showed up to watch the game versus the raleigh-durham skyhawks?
CREATE TABLE "table1_24481478_1" (
  "week" real,
  "date" text,
  "kickoff" text,
  "opponent" text,
  "final_score" text,
  "team_record" text,
  "game_site" text,
  "attendance" real
);
SELECT MAX("attendance") FROM "table1_24481478_1" WHERE "opponent"='Raleigh-Durham Skyhawks';