The indicator measures ATR relative to VOLUME of each candle, marks the candles where there is more volume than in the previous one, but a lower ATR - signifying a compression in price movement - resistance. It also marks the candle where there is a greater ATR than in the previous candle, but lower volume - signifying an expansion in price movement - vacuum.
P.S. Bring indicator to FRONT to see the colored candles clearly
P.S. Bring indicator to FRONT to see the colored candles clearly