Again, I think you're looking at the wrong thing, here's a quick snapshot off the current T&S for ES03M.
Looks like bid/ask changes are reported independent of trades to me:
05/07/2003, 16:08:38, 929.75, 753, Best bid
05/07/2003, 16:08:38, 930, 133, Best ask
05/07/2003, 16:08:38, 930...