Dark nitrogen fixation rates in South China Sea and data compilation of global nitrogen fixation rates below the euphotic zone

This dataset includes supplemental information and original N₂ fixation rate data (also as Table S2 and S3) for the manuscript: <i>Insights into nitrogen fixation below the euphotic zone: trials in an oligotrophic marginal sea and global compilation.</i>Rates come from Aug 2018 cruise, Jul 2019 cruise and published paper in the reference.Find detailed methods in the main text of the manuscript.<br><i><br></i>