StateofTarget is sort of right... here is the paygrade chart (or at least most of what I know off the top of my head)
N3 (Base Wage) = Salesfloor TMs, Guest Service TMs, and CAs
N5 (Base Wage + .25) = More specialized positions such as Photo, Instocks, Pricing, and some brand TMs
N7 (Base Wage + .50) = Logistics positions, presentation in most stores, GSAs
N9 (Base Wage + 1.00) = Old specialist level, now just Deli TMs, Perishables Assistants and some random positions left over
N11 (Base Wage + 2.00?... I am not sure because the only PG11 position I even know of is Cake Decorator)
N13 (Base Wage + 3.00) = Team Leaders
N15 (Base Wage + 4.00?... Negotiable when you reach these levels) = Key Carrier TLs, Specialized Food TLs, APTLs
N17 (Negotiable and depends on area...) = Senior TLs
Now the weird thing about PGs is that some stores will differ in special circumstances... The most common is Presentation being a PG5 or PG7 because some stores may have the workload differ (allocating alot of the backroom workload away from the team)... Some stores just have trouble hiring all around, and will sometimes make ALL positions PG7 if needed...