Statistical Process Control (SPC) software and manual available here

Here is a copy of the SPC software for creating run charts to analyse performance for natural or common cause variation (expected variation within the system - in control) or special cause variation (an indication that something unexpected is going on within the system - out of control). There is also a manual to help use the software. If you would like to use this tool but want a hand getting started, contact me and I can help.