This GIF image is an information graphic created by a computer program from data sets or formulas that have not been fully provided on this page. In order to allow other editors to improve or build such images, and to ensure compliance with free content licenses such as the GFDL, the following should be provided:

• Software package(s) used
• Data sets used (if any), including pre-processing instructions
• Sequence of commands used to create the graphic
• Short description of any post-processing stages

Once all the above are included in the image's description page(s), please remove this template.