Bollinger on Bollinger Bands Official site of John Bollinger's book You can see how the bands contract more quickly after volatility expansions though there still is a lag. Weekly. Classic Charts FREE charting program with several features including Bollinger Bands and Bollinger Envelopes.
Bollinger Band Daily System @ Forex Factory If prices were normally distributed, two standard deviations would have equated to 95.4% of the price action range. Bollinger Band Daily System Trading Systems. As you can see,it's eurusd daily chart with a bollinger band. Bollinger Bands Defined
Natural Gas Daily Commodity Futures Price Chart April. You would need other techniques in a conventional Bollinger Band system to make it workable. Natural Gas NG, NYMEX price charts for futures.