where is info on the defensive cards?

i'm trying to understand the numbers on the Dline, LB's and DB's?

All defensive players have individual ratings, and they add them up to get the total that you see under "Squad", or on the Player Set Browser page. For example, 2016 Eagles defensive line, defense ratings: Barwin 4, Graham 6, Cox 6, Logan 4, Curry 4, adds up to 24.

http://365.strat-o-matic.com/help/football/ratings

thanks. i just couldn't find it?