For those that have been able to reverse engineer these indicators none of this will be new information. For those that are still working on it, another hint - it's not just volume or transactions over time. The calculation involves both acceleraton and deceleration as well as measures of both buying and selling.
While these spikes occur throughout the session they are present on almost every session extreme.
The session extremes on both Thursday and Friday were all
FORETOLD by this measure of commercial trade;
On Thursday 08/27 the session low came at 0710+ and 7-8 minutes
BEFORE that low there was a very intense spike in commercial buying as shown below:
Some hours later, at 1144, and 1 minute before the session high there was a corresponding spike in selling:
On Friday 08/28, just at the Open there was a sell spike that came some 7 minutes
before and within .50 of the session high:
Soon after the session high there was a buy spike that offered the opportunity for a "reaction trade" of some 4-5 points:
Friday's session low occurred arount 0925 and was Preceded by a strong spike in intense commercial buying: