This function is used to obtain standard deviation of all data by channels. Standard deviation is a value defining probability distribution of data. Lower standard deviation means most data values are near mean, while higher standard deviation indicates large variation of data. For more information on standard deviation, please refer to Rescaling by Mean and Standard Deviation.
Select data you want to apply this method in Analysis Window and click the icon of Standard Deviation in Analysis Tool Bar. This will display the following graph. Results by channels are shown as a bar graph in Display Window and registered at Analysis Window.