Ok, the enum field is a possibility.
The two pictures should be be represented by two different fields.
After the user has give in the values, for example 9,25 is should be shown on the page like the second grafic I sent above.
In another field they give in the value 4, then it should be shown as the first grafic in my first comment.
And if this is working I want to see the same grafics later on a report^^
