RAP charting, page-24

Prowiz, I gotta agree with @TraderGT here as its a coinflip.

Market depth is meant to play on trader psychology and as such measured moves including props and icebergs can be used simply to force traders one way or another.

If you follow depth you're trying to figure out someone elses motives. Far better to use the chart and see what the stock-price wants to do with actual sales than use depth which can be manipulated in either direction.