The definitions really aren't that important imo. I mean I guess they are if you're trying to graph the amount of time you play in a specific state, but I think that's way too hard to quantify as the quality of your mental game is constantly in flux. It's pretty rare to play an entire session completely in one category or the other imo. The kind of precise introspection and constant (manual) recording required to accurately graph this would be too distracting when you're trying to focus on poker at the same time.

A more useful practice than constantly recording your mental state during play (I'm not saying that's what you do, I assume you're averaging it over a session) is to constantly sample your mental state, and try to bring yourself back to an optimal, objective state. I found angelo's deep breathing suggestion helpful, as I've generally found all breathing-based meditations helpful. If all else fails, snap quit.

I just jumped on you because I don't believe most people are particularly good at judging the quality of their mental state, and tend to underestimate the extent of tilt they're experiencing. Tilt puts you in a more primitive mental state where introspection becomes harder and harder as our reptilian brains take over. Apologies if you're better than most -- I don't know you and you may be better than I assumed.