This is my own enhanced version of Bollinger Bands based on some backtesting,,
It's the same logic behind standard BB but instead of using length(period), I created a formula and used a "factor" to scale it up/down. The formula is just average of averages of averages... (But it's backtested with good results)
I also added two standard deviations so that the distance between them will be the (over-bought/over-sold zones) And finally added a squeeze indicator to identify the predicted price action movements..
You have the options to control everything like: -Timeframe -Source -Calculation Method -Length Factor -StdDev#1 -StdDev#2 -Squeeze Factor -Squeeze Threshold