The chart above shows the Bollinger Bands plotted on GBP / JPY, with standard parameters of a 20 - period SMA and upper and lower bands plotted at two standard deviations away from the moving average. (newtraderu.com)
However, for the designer it is often very difficult to assess the energy - efficiency, durability and the necessary energy parameters of a component as the available standard parameters are frequently unrealistic or are not accurate enough; reliable project planning using manufacturers» information alone is often not possible. (passiv.de)