This document contains two tables of stable isotope data from algal samples collected from Wash Cresc Lake, including the sample ID, weight, carbon and nitrogen content, carbon-13 and nitrogen-15 isotope ratios, and spectrometer number. It also lists the reference statistics for carbon-13 and nitrogen-15 isotope ratios. Additional text provides context that this is old data from Peter's lab that should not be used. Random notes are included at the bottom.