BB(20,2) of nifty futures on time frame 4/6 min are presented below.
Choppy Market:
Go long when
Red+Green candles pierce the bottom band and wait for 15minutes
for confirmation after taking position, otherwise come out with stoploss.
Go short when
Green+Red candles pierce the top band and wait for 15minutes
for confirmation after taking position , otherwise come out with stoploss.
Strong Market:
If the candles are concentrated in Top band go Long.
If the candles are concentrated in Bottom band go Short.
The Proximity of candles with respect to Outer boundaries indicates the Strength.
More strength means more closer to Outer boundaries.