Measurements of inorganic ion composition of monthly/fortnightly rainfall samples collected at Kelburn, Lauder, Puruki. Measurement locations and dates are given below: Kelburn (41.17° S, 174.46° E) from March 1983 to March 1992 Lauder (45.02° S, 169.41° E) from July 1982 to Oct 1993 Puruki (38.43° S, 176.22° E) from July 1989 to Feb1991