"Down only. Once a limit offer has been established, trading can occur at or above this limit for 102 minutes or until 2:30 p.m. CT.3 Trading will halt for two minutes if the primary futures contract is limit offer at the end of the 102 minutes or at 2:30 p.m. CT3. Trading will resume with the 10% limit in effect."
Well, the first limit down for the NQ is 50 points. And all you have to do is scroll back over a daily chart of the nq and you can see plenty of days in the high 30's and low 40's. I use Qcharts so it could be way off, but scrolling the index itself provides the same info.