BTCUSD : Update

1.Major support MA150
2.Mining coast per coin $3,341 (by BitMEX Research)
3.About volatility
papers.ssrn.com...sol3/papers.cfm?abstract_i...
woobull.com/bitcoin-...-currencies-by-2019/
According to the above article, next bottom price >= Fib0.83 ($3,500)