https://davidgerard.co.uk/blockchain/2018/01/28/how-to-read-a-crypto-market-depth-chart-and-why-people-went-holy-crap-at-the-overnight-tether-chart/gdax-depth-chart-btc-usd_2018-01-28_13-16-10/
GDAX depth chart BTC USD_2018-01-28_13-16-10