Each sample run shipped with GeneXproTools has a description attached. To see the description open the run and then choose the menu Reports->Notes. For example, the sample Mauna Loa CO2 has the following description:
"Mauna Loa atmospheric CO2 concentration:
A time series of 552 monthly observations from 1958 to 2003 of atmospheric concentrations of CO2 expressed in parts per million.
The values for January, February, June and October of 1958 and for February, March and April of 1964 were missing in the original time series and were replaced by values obtained using two different nonlinear gep models created separately for 1958 and 1964.
Source: Keeling, C. D. and Whorf, T. P., Scripps Institution of Oceanography, University of California, La Jolla, California, USA.