On this Picostat.com statistics page, you will find information about the SP500W90 data set which pertains to Closing Numbers for S and P 500 Index - First 100 Days of 1990. The SP500W90 data set is found in the DAAG R package. You can load the SP500W90 data set in R by issuing the following command at the console data("SP500W90"). This will load the data into a variable called SP500W90. If R says the SP500W90 data set is not found, you can try installing the package by issuing this command install.packages("DAAG") and then attempt to reload the data. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the SP500W90 R data set. The size of this file is about 1,016 bytes.
Closing Numbers for S and P 500 Index - First 100 Days of 1990
Closing numbers for S and P 500 Index, Jan. 1, 1990 through
Derived from SP500 in the MASS library.
Dataset imported from https://www.r-project.org.