Again, skills are displayed with words. People use numbers because it is easier, but you have to count what each skill is to get the number yourself. Here's a cheat sheet for you...
1=atrocious
2=pitiful
3=awful
4=inept
5=mediocre
6=average
7=respectable
8=strong
9=proficient
10=prominent
11=prolific
12=sensational
13=tremendous
14=wondrous
15=marvelous
16=prodigious
17=stupendous
18=phenomenal
19=colossal
20+=legendary