Now we are testing MA 200. I think it's one of most important lines in BTC history. When BTC broke down MA 200 in March 2014 we recovered to the same price level only in 2016. The same with drop under MA 200 in Feb 2018. If price would go above 47000 with volume - we would be safe. If BTC would drop significantly under current levels - probably BTC will need months and years to recover.