private HashMap<String, Integer> getWisley_2000() {
        HashMap<String, Integer> map = new HashMap<String, Integer>();

        map.put("C", 156);
        map.put("H", 180);
        map.put("N", 20);
        map.put("O", 40);
        map.put("P", 9);
        map.put("S", 14);
        map.put("F", 48);
        map.put("Cl", 12);
        map.put("Br", 10);
        map.put("Si", 15);

        return map;
    }
private HashMap < String , Integer > getWisley_2000 ( ) { HashMap < String , Integer > map = new HashMap < String , Integer > ( ) ; map . put ( "C" , 156 ) ; map . put ( "H" , 180 ) ; map . put ( "N" , 20 ) ; map . put ( "O" , 40 ) ; map . put ( "P" , 9 ) ; map . put ( "S" , 14 ) ; map . put ( "F" , 48 ) ; map . put ( "Cl" , 12 ) ; map . put ( "Br" , 10 ) ; map . put ( "Si" , 15 ) ; return map ; }
Get the map linking the symbol of the element and number maximum of occurrence.
For the analysis with the Wisley database and mass lower than 2000 Da.

@return The HashMap of the symbol linked with the maximum occurrence