This TA is called Keltner Channel Width(KCW). It consists of a black line measuring the percentage difference between the upper and the lower channel and a blue line which is the 20-sma of KCW. Based on true range, KCW can be interpreted in two ways: (1) falling width reflects decreasing volatility and (2) rising width reflects increasing volatility.
KCW is a powerful weapon for identifying The Squeeze. This occurs when volatility falls to a very low level, as evidenced by decresing value (negative crossover). After a Squeeze, might be a positive crossover, it signals the start of a new move. A new advance starts with a Squeeze and subsequent break above the upper channel. A new decline starts with a Squeeze and subsequent break below the lower channel.
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