The discussion, knowledge, and technical detail offered by the people commenting on this topic is very impressive.

However, it strikes me that the vast majority of this detail could be avoided if the TC2000 programmers would make another PCF variable available to users that is the MLR (moving linear regression). The name of the variable would look something like this: MLRC30.4. That would be the value 4 days ago of the predicted value for that day of the linear regression of the closing price over the prior 30 days.

It seems that the divergence between the MLRC30.4 and the actual closing price would then be a simple matter to calculate.