Guaymas Basin Porewater Geochemistry 
 Cruise: AT15-40 
 PI: Andreas Teske (UNC Chapel Hill) 
 Version History: 
  Changed 'CO2' column headers to 'DIC': 12 November 2015 (current version) 
  Replaced original w/ new data: 21 October 2015 
  Original: 18 July 2012 
 NOTE: BCO-DMO added dive_id, dive_target, month, day, year, lat and lon  
       (shipfix and subfix), depth, and cruise_id from cruise report.