dive_core_no  dive_no  core_no  depth_target  shipfix_lat  shipfix_lon  subfix_lat  subfix_lon  month  day  year  cruise_id  depth_core  CH4    d13C_CH4  DIC     d13C_DIC  sulfate  
4490-27       4490     27       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    0           nd     nd        nd      nd        28.08    
4490-27       4490     27       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    1           0.10   -17.37    6.34    -15.87    26.12    
4490-27       4490     27       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    3           0.22   -13.30    8.12    -19.17    23.68    
4490-27       4490     27       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    5           0.17   -12.67    9.51    -19.42    23.26    
4490-27       4490     27       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    7           0.27   -14.63    10.33   -20.58    23.34