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  
4483-23       4483     23       2004          27.0065      -111.4093    none        none        12     06   2008  AT15-40    1           nd     -28.01    5.97    -18.30    24.93    
4483-23       4483     23       2004          27.0065      -111.4093    none        none        12     06   2008  AT15-40    3           1.61   -20.60    13.65   -22.36    14.43    
4483-23       4483     23       2004          27.0065      -111.4093    none        none        12     06   2008  AT15-40    5           1.84   -21.32    16.87   -22.60    9.02     
4483-23       4483     23       2004          27.0065      -111.4093    none        none        12     06   2008  AT15-40    7           2.09   -21.51    17.30   -23.18    8.46     
4483-23       4483     23       2004          27.0065      -111.4093    none        none        12     06   2008  AT15-40    9           3.34   -28.64    16.92   -22.31    9.38     
4483-23       4483     23       2004          27.0065      -111.4093    none        none        12     06   2008  AT15-40    11          4.22   -33.13    16.02   -22.31    9.36     
4483-23       4483     23       2004          27.0065      -111.4093    none        none        12     06   2008  AT15-40    13          4.04   -33.13    15.67   -21.95    9.68     
4483-23       4483     23       2004          27.0065      -111.4093    none        none        12     06   2008  AT15-40    15          4.36   -33.39    15.40   -21.79    11.15    
4483-23       4483     23       2004          27.0065      -111.4093    none        none        12     06   2008  AT15-40    17          2.96   -34.33    14.22   -20.22    13.28