view on 1m chart, vol is calculated from previous 1440 1m closes
リリースノート
volatility as calculated from 1 minute closes for last 1440 candles (24h)
リリースノート
The BitMEX Daily Historical Bitcoin Volatility Index is referred to as the .BVOL24H Index. This index is calculated logarithmic percentage change taken from measurements taken the Bitcoin spot price every minute.