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  
4490-25       4490     25       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    0           nd     nd        nd      nd        26.29    
4490-25       4490     25       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    1           0.14   -13.53    5.99    -16.12    25.50    
4490-25       4490     25       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    3           0.19   -8.78     8.90    -20.30    22.95    
4490-25       4490     25       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    5           0.29   -6.35     10.71   -20.44    23.09    
4490-25       4490     25       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    7           0.44   -9.21     10.52   -20.32    22.64    
4490-25       4490     25       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    9           0.51   -16.54    10.24   -20.51    22.19    
4490-25       4490     25       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    11          2.15   -33.87    8.88    -18.61    22.88    
4490-25       4490     25       2010          27.0077      -111.4085    27.0077     -111.4088   12     14   2008  AT15-40    13          2.84   -41.68    5.45    -10.68    23.76