The data are the Sea Surface Temperatures (SST) and Southern Oscillation Index (SOI) measurements from 1950 to 2010.
A data frame with 732 observations on the following 4 variables.
a numerical variable for month, with 1 = January
the Southern Oscillation Index)
the Sea Surfact Temperature)
Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A Course in Methods of Data Analysis (3rd ed), Cengage Learning.
U.S. National Oceanographic and Atmospheric Administration (http://www.cpc.ncep.noaa.gov/data/indices/).