That's interesting. I basically do the same thing, but never thought of giving it a quick eyeball quantitation.
The PREM today started out in the 7's and continued to hit until 9:34. The PREM continued to fall until it hit sell levels at 9:39, 9:40 and 9:41. Looks like it got about 25 points on the Dow. After it bounced it has been trading in a fairly negative range with only a few spikes now and then above 0.00, and since about 9:50ish has been doing the continue trend pattern, which is down.
MSFT since gapping up has been diving, now down over a $1.
The PREM at 10:23 spiked down to the lowest since the start. The pattern than changed into a mini up trend, which goes with the small bounce. Looked to roll over, but now maybe the start of a continue trend pattern.
COMP and NDX look to be trying to get and up trend going. SPX and Dow look to be going sideways to slight up.