Legend
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This graphic is almost meaningless without an explanation of what the different colors of arrows represent. Swiss Frank (talk) 22:15, 25 May 2019 (UTC)
- Looks like Wikipedia’s renderer is not displaying the alpha and beta symbols. If you click through to display the SVG in browser, you will see them. --JWB (talk) 13:37, 24 March 2023 (UTC)
