static public String tickOptionComputation( int tickerId, int field, double impliedVol,
    		double delta, double modelPrice, double pvDividend) {
    	String toAdd = "id=" + tickerId + "  " + TickType.getField( field) +
		   ": vol = " + ((impliedVol >= 0 && impliedVol != Double.MAX_VALUE) ? Double.toString(impliedVol) : "N/A") +
		   " delta = " + ((Math.abs(delta) <= 1) ? Double.toString(delta) : "N/A");
    	if (field == TickType.MODEL_OPTION) {
    		toAdd += ": modelPrice = " + ((modelPrice >= 0 && modelPrice != Double.MAX_VALUE) ? Double.toString(modelPrice) : "N/A");
    		toAdd += ": pvDividend = " + ((pvDividend >= 0 && pvDividend != Double.MAX_VALUE) ? Double.toString(pvDividend) : "N/A");
    	}
		return toAdd;
    }