Temporal variations for 222 Rn , discharge, temperature and electrical conductivity at the "Areuse" spring at St.Sulpice, near Fleurier, Switzerland [ 6 ]. 1sigma- error : radon ±5%, conductivity, temperature and discharge approx. ± 1%. Also given are precipitations at La Brévine. La Brévine lies in the center of the watershed area. Uncertainities for the precipitations are approx. ± 0.5 mm/12h. ( units )