The delta 18O values were determined at the Quaternary Isotope Laboratory (M. Stuiver, Box 351360, University of Washington, Seattle WA 98195, USA). The time scale (st9810) is a combined timescale from geophysical measurements, gas-correation with the GISP2 layer-counted chronology (central Greenland), and interpolation using gas and 10-Be control points. Details are given in Steig et al., 2000. All of the data in this file are from samples bottled at the University of New Hampshire. Samples are "residue" from the UNH automated melting system, used as a prep. system for ion chromatography measurements. All ice was sampled at the NationalIce Core Laboratory.