Annual international sunspot numbers
Annual international sunspot numbers, NOAA National Geophysical Data Center, 1700 - 2005.
data(spots1)
The format is: ts [1:306, 1] 5 11 16 23 36 58 29 20 10 8 ... - attr(*, "dimnames")=List of 2 ..$ : NULL ..$ : chr "spots" - attr(*, "tsp")= num [1:3] 1700 2005 1
ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SUNSPOT_NUMBERS/YEARLY.PLT
data(spots1) ## maybe str(spots1) ; plot(spots1) ...
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