Brian,
Wow, not sure where that is coming from either. One suggestion that might help is to state if CPI is >= 1 then Green, < .97 then Red, Yellow. It might do a better job of not leaving a number unassigned (like maybe the number .9754867). Can’t help with the “x’s” but I’d be happy to take a look at the schedule if you want. Try posting a picture of the actual formula and graphical indicator criteria I’m sure there’s an answer.