Catalog of soil-gas radon measurements in central California from May 1975 through December 1978

This catalog presents data collected during the initial three and a half years (May 1975 through December 1978) of an ongoing field experiment in which radon concentration of subsurface soil gas is continuously monitored by a network of stations deployed along active faults in central California. The purpose of this experiment is to search for possible premonitory radon signals that may be useful for earthquake prediction.