Can you tell me the sum of Podiums that has the Season of 2006, and the Races larger than 16?
CREATE TABLE "by_season" (
  "season" text,
  "races" real,
  "podiums" real,
  "pole" real,
  "f_lap" real
);
SELECT SUM("podiums") FROM "by_season" WHERE "season"='2006' AND "races">16;