Using a PD model, with 21 and 22 values (source is on this post), check this out.  This is an oscillation in process.

Nothing too crazy

Looks normal.  Data looks pretty much legit

At about 275 and 550, notice some weirdness?  I DO!!!  At no point should this go past -25 to 25.

HELLO messed up angle ratings.  500 and 1000 ratings?  I'd be doing loops.

An angle rating shouldn't be this crazy and I still feel like a whale is on my chest with a massive hangover (no i haven't done on a bender, as much fun as those are).