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The data are the annual sunspot counts in each year from 1700 to 2010.
ex1507
A data frame with 311 observations on the following 2 variables.
year in which sunspots were counted, from 1700 to 2010
the number of sunspots observed in a year
SIDC-Solar Influences Dta Center, http://sidc.oma.be/sunspot-data/ (July 15, 2011).
# NOT RUN { str(ex1509) # }
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