Installed and Planned CHICOS sites

So far nearly 50 sites have been installed, mainly in the San Fernando and San Gabriel valleys.
Within about a year, all 90 sets of detectors should be installed and operating, covering a ground area of about 350 sq. km.
With 90 sites operating, CHICOS expects to observe about 100 events/yr above 10^19 eV and 3/yr above 10^20 eV.