2021-02-25 These data are supplemental tables 4-11 associated with the preprint for Heal et al "Marine community metabolomes carry fingerprints of phytoplankton community composition" on bioRxiv (doi: https://doi.org/10.1101/2020.12.22.424086), as described in the preprint and below. The tables are combined into a single combined .xlsx file, with each of the following tables as a single tab. TAB S5: Peak areas from environmental and culture samples. MassFeature-Column is the identifier for each distinct mass feature (identified or not), as in all tables. Identification is the best identification we have for the mass feature; Confidence is based on Sumner 2007, with 1 as unequivocal (and quantifiable); mz is mass to charge ratio observed; rt is retention time (in seconds); Column is the chromatography method used (HILIC or RP); z is charge state in which the mass feature was observed (1 is positive, -1 is negative). TAB S6. Assignments of mass features compounds to modes and metaclusters (if applicable) as a result of the k-medoids clustering summarized in Figures 1, 2, and 3 of associated preprint. MassFeature_Column is the identifier for each distinct mass feature (identified or not), as in all tables. Identification is the best identification we have for the mass feature; Confidence is based on Sumner 2007, with 1 as unequivocal (and quantifiable); mz is mass to charge ratio observed; rt is retention time (in seconds); Column is the chromatography method used (HILIC or RP); z is charge state in which the mass feature was observed (1 is positive, -1 is negative). MS2 is the spectra for the peak in a pooled sample from the transect sample set. TAB S7. Full sample descriptions for culture samples. All volumes in microL. Carbon estimates are based on Menden-Deuer et al 2000, Ribalet et al 2019, Dron et al 2012, and Zhang et al 2020, as indicated. TAB S8. Quantified metabolites from all culture samples. Compound names are given as reported in figures and as more complete names for clarity. All values intracellular in micromole metabolite per L. Sample identifiers are elaborated in Table S7. TAB S9. Total quantifiable metabolites as a fraction of the particulate carbon and nitrogen pools. All measurements are mean (standard deviation), except when \textit{n} = 1. Standard deviations of calculations (percentages) are propagated. Note that we do not have bulk particulate carbon or nitrogen measurements paired with the depth profiles. TAB S10. Quantified particulate metabolites from all environmental samples. Compound names are given as reported in figures and as more complete names for clarity. All values are nmol metabolite per L seawater. Sample identifiers are elaborated in Table S4. TAB S11.Quantification method for each quantified metabolite in each sample set. Proxy compound (when applicable) is the compound by which a relative response factor (RF) was calculated. Citation DOIs Sumner 2007: 10.1007/s11306-007-0082-2 Menden-Deuer et al 2000: 10.4319/lo.2000.45.3.0569 Ribalet et al 2019: 10.1038/s41597-019-0292-2 Dron et al 2012: 10.1111/j.1462-2920.2011.02675.x Zhang et al 2020: 10.1073/pnas.1912367117