This is an educational post. I am not a SEBI registered . BankNifty will be bullish to buy on dip above yellow and green zone. But 10 ema and 20 ema should be rising price must be near 10 ema and 20 ema. And sideways movement between yellow and red zone. And Banknifty will be bearish below red zone but 10 ema and 20 ema should be falling. And the black line is for profit booking if there is breakout or breakdown of green and red area respectively.