A. I am considered an expert on this. I have successfully done this multiple times without assistance or error. I train or supervise others on this activity. Others come to me when they have questions or need assistance with this.
B. I have successfully done this without assistance and with few errors, but I do not train or supervise others on this activity.
C. I am proficient at this. I have successfully done this on my own, but I occasionally require assistance for some types of problems encountered when doing this and/or occasionally make minor errors.
D. I have successfully done this with the assistance of others or specific instructions.
E. I am a novice. I have not done this yet or I am learning.

A. None
B. Less than 3 months
C. 3-6 months
D. More than 6 months but less than 1 year
E. 1-2 years
F. 2-3 years
G. 3-4 years