What is the highest number of Seats 2006 held by the Christian Democratic Union of Germany Party/Voter Community, with a %2006 higher than 24.6?
CREATE TABLE "community_council" (
  "parties_and_voter_communities" text,
  "pct_2006" real,
  "seats_2006" real,
  "pct_2001" real,
  "seats_2001" real
);
SELECT MAX("seats_2006") FROM "community_council" WHERE "parties_and_voter_communities"='christian democratic union of germany' AND "pct_2006">24.6;