The script is made to help to determine OPTIONS volatility.
The Script is showing the Historical volatility of any stock for its last 1 year data.
Historical volatility is important to know how stock can perform in panic days.
Historical volatility is best used with Implied volatility.
How to Interpret the Script or How to use it?
The Script show 5 parts the lowermost is lowest HV in last year & the highest part shows highest volatility in the past 1 year.
Use this on a DAILY CHART only.
Now Take the IV (implied volatility of stock) and put that figure in between the HV and check in which part current IV resides. based on that you can determine how OPTIONS premium or how much it INFLATED or DEFLATED.