Mark made up the chart, and the "rules" at the top.
It's like this: I am supposed to begin doing something to bring my weight back to the middle whenever any of the conditions described in the rules are met. I cannot return to normal behavior until the running average of five measurements in a row crosses the midline again.
This is great, except that I have not gotten around to defining "normal behavior," nor the positive and negative types of "doing something." Right now "normal behavior" is "more or less eat what I want" and "doing something" is "eat less than I want." (I have only slipped into the land of underweight-must-eat-more once.)
I really won't feel that I'm doing this properly, and proactively, until I've figured out what "normal" ought to include.