What is the average percentage of total area when the percentage of marine area is more than 39.3 and territorial waters area is less than 2,788,349?
CREATE TABLE "marine_ecozones" (
  "ecozone" text,
  "area_km_territorial_waters" real,
  "area_km_exclusive_economic_zone" real,
  "percentage_of_total_area_for_eez" real,
  "percentage_of_marine_area_for_eez" real
);
SELECT AVG("percentage_of_total_area_for_eez") FROM "marine_ecozones" WHERE "percentage_of_marine_area_for_eez">39.3 AND "area_km_territorial_waters"<'2,788,349';