The document describes stable isotope data from algal samples collected from Wash Cresc Lake. It includes a table with sample identifiers, weights, carbon and nitrogen composition percentages, delta C-13 and delta N-15 values, and calibration corrections for delta values. The table contains stable isotope measurements for 23 algal samples. Additional context is provided by notes that it is stable isotope data from algal samples collected on December 16th and references are given for the standard deviations of delta values.