RUSSIAN JOURNAL OF EARTH SCIENCES VOL. 10, ES3005, doi:10.2205/2007ES000247, 2008

2007ES000247-fig01.html
Figure 1. Solar activity since the invention of the telescope (1610): the degree of confidence of the observational data is shown graphically; red crosses: isolated observations; light-blue curve: restored monthly average Wolf numbers (low confidence); dark-blue curve: trustworthy monthly average Wolf numbers (http://commons.wikimedia.org/wiki/Image:Sunspot_Numbers.png).

RJES

Citation: Ishkov, V. N. (2008), Solar geoeffective phenomena: Impact on the near-Earth space and the opportunity to forecast, Russ. J. Earth Sci., 10, ES3005, doi:10.2205/2007ES000247.

Copyright 2008 by the Russian Journal of Earth Sciences
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