Central Tendency Description

CTHV:	Current daily level of the *Central Tendency of Historical Volatility (CTHV)*, the 15-year average of 20-day historical volatility (of futures prices). Thus, CTHV is the historical reference against which to compare IV and HV. CTHV is also used to calculate +1 and -1 STD (Standard Deviation), between which HV has theoretically been found 67% of the time. Thus, an IV or HV above +1 STD (green number) or below -1 STD (red number) is considered outside the historical norm.

CTHV:

Current daily level of the Central Tendency of Historical Volatility (CTHV), the 15-year average of 20-day historical volatility (of futures prices). Thus, CTHV is the historical reference against which to compare IV and HV. CTHV is also used to calculate +1 and -1 STD (Standard Deviation), between which HV has theoretically been found 67% of the time. Thus, an IV or HV above +1 STD (green number) or below -1 STD (red number) is considered outside the historical norm.