Stable Oxygen Isotopes of Antarctic Snow Pits, Supplementary Data To: Bertler, Nancy A; Naish, Tim R; Oerter, Hans; Kipfstuhl, Josef; Barrett, Peter J; Mayewski, Paul A; Kreutz, K (2006): The Effects of Joint ENSO - Antarctic Oscillation Forcing on the McMurdo Dry Valleys, Antarctica. Antarctic Science, 18(4), 507-514