There is a web page with instructions for the survey
what the survey is about,
how to build or find an application that collects trigger statistics,
how to run it over your analysis collection,
how to interpret the output.
The results from year 2006 (no 1Zk line) are stored under  links, the results from year 2007 with SP9 MC (1Zk line in) are stored under  links. The emulation study has been done on SP9 MC. The results are stored under Emulation1, Emulation2 links. The configuration definitions are here (look for README file):
A number of people from various AWGs have contributed results on the Run 1-5 configurations for the
analyses that are listed here. (When a decay mode is given, the recoil side is implied to be generic unless explicitly specified.) A same survey with SP9 on the Run 6 configuration is on-going now (August, 2007).