This is for you my friend....OMG, so it is true that human traders consider round numbers as support/resistance level.
Exactly that's what I am working on with my research at the moment .
But you don't have to worry too much about round number effect during openings cos when market is highly liquid, round number effect disappears only when market becomes illiquid, it exhibits round number effect.
At some(most)institutions round numbers are big... some trader trade only there...
I created this for you and I highlighted with blue how many times it reacts when it reaches round numbers.... and remember why I did not get it at the 1.000... cause it was almost sure it would react there...
