private static void addToMarketSum(TreeMap<Float, float[]> individual) {
		for (Entry<Float, float[]> ent : individual.entrySet()) {

			float[] dayData = Database.SUM_MARKET_PRICE_DATA.get(ent.getKey());
			if (dayData == null) {
				Database.SUM_MARKET_PRICE_DATA.put(ent.getKey(),
						new float[ent.getValue().length]);
			}
			addIndividualDataToMarketSum(ent);
		}
	}