High characteristics question

[nbkbruce]

How would I calculate the DM of a characteristic higher than the human maximum of 15? Say, for instance, for extremely strong animals, or if a person of Strength 12+ put on Battle Dress.

 

[AndrewW]

How would I calculate the DM of a characteristic higher than the human maximum of 15? Say, for instance, for extremely strong animals, or if a person of Strength 12+ put on Battle Dress.

Table advances in 3's so that would be:

15 - 17 +3
17 - 20 +4
21 - 24 +5
25 - 28 +6
etc.