The naming of the data sets followed the above mentioned category acronyms, with numbers attached and incremental within each category. The order for the numbers is somewhat arbitrary, depending on the date of registration and when the final data was submitted. An overview of the participants is provided in Table , with a short summary of the techniques employed available in Table . It should be noted that in some cases the description is rather short and does not really do justice to the overall process. The readers should consult the ESI † files for a full description and computational details.