Actually I just print it- someone else does the counting;-)
As for what's going on in the last hour I can guarantee you they are not all sells as I've picked up over 2M in the last hour alone.
FWIW I'm talking B&A activity, not neccesarily buys & sells as I've found the coloring of trades to be misleading at times. I have Mytrack open most of the time, and with them the .0008 trades are showing green.