These files contain the earthquake parameter catalog of the Southern California Seismic Network 1932-present. They are available in 2 formats: SCEC_DC and SCSN. For documentation on the formats, please go to
http://scedc.caltech.edu/eq-catalogs/catalog_search_help.html#output_format
A current snapshot of these files can be found at
https://service.scedc.caltech.edu/ftp/catalogs/SCEC_DC and https://service.scedc.caltech.edu/ftp/catalogs/SCSN
Earthquake parametric catalogs from Southern California Earthquake Data Center