Water column methane, ethylene, and corresponding nutrients from R/V Armstrong cruise AR16 PI: Daniel J. Repeta (WHOI) Co-PIs: David M. Karl (University of Hawaii) Version date hisotry: 19 July 2019 (current) - version 2; detection limits of ethylene gas were re-calculated. 11 June 2019 - version 1; original submission. Note: nd = not determined; bdl = below detection limit.