Size-fractionated major and minor particle composition and concentration from GEOTRACES NAZT cruises PI: P. Lam (WHOI) version 5.1: 2020-02-26 [changed displayed order of columns] [replaces version 5: 2018-08-06 [corrected data - see documentation] [replaces version 4: 2014-12-12 [corrected data - see documentation] [replaces version 3: 31 October 2013] [replaces version 2b: 14 June 2013] [replaces version 2: 11 April 2013: added nominal depths] [replaces version 1: 1 February 2013]