private TreeMap<Float, Float> mapDateNumberToValue(
			TreeMap<Float, float[]> technicals, int idPt) {
		TreeMap<Float, Float> pricePoints = new TreeMap<Float, Float>();
		for (Entry<Float, float[]> ent : technicals.entrySet()) {
			pricePoints.put(ent.getKey(), ent.getValue()[idPt]);
		}
		return pricePoints;
	}