Yearly sunspots data 1700-2008 ============================== Description ----------- Yearly (1700-2008) data on sunspots from the National Geophysical Data Center. Notes ----- :: Number of Observations - 309 (Annual 1700 - 2008) Number of Variables - 1 Variable name definitions:: SUNACTIVITY - Number of sunspots for each year The data file contains a 'YEAR' variable that is not returned by load. Source ------ http://www.ngdc.noaa.gov/stp/solar/solarda3.html The original dataset contains monthly data on sunspot activity in the file ./src/sunspots_yearly.dat. There is also sunspots_monthly.dat. Copyright --------- This data is public domain.