During the R/V Knorr expedition along WOCE Section P6, 649 accelerator mass spectrometry (AMS) delta 14C samples were collected at 30 stations. In addition 17 replicate measurements of 14C were performed. Sampling of 14C during the cruise was carried out by the scientists from the Ocean Tracer Laboratory at Princeton University, with R. Key as the principal investigator for these data. For a detailed description of the methods and instrumentation used for 14C measurements please read the reprint of pertinent literature: "P6 Final Report for AMS 14C Samples" in Appendix A of this documentation.