[thackney]

I would like to see the graphs going back to the 1920s. I doubt data is available to back then, however.

Interested folks have been counting Sun Spots for a long time.

Source:
http://www.michaelmandeville.com/earthmonitor/cosmos/solarwind/Sunspot%20Cycles%20&%20Human%20History.pdf

[Tenacious 1]

I never realized how consistent the sun was. Thank you. That is scientific! What happens when we overlay a graph of global temps? Is there any relation?