cast  station  date_start_utc  time_start_utc  event_start         lat_start    lon_start     niskin  depth      press     bots  PO4      NO3_NO2   silicate  NO2      NH4      NPOC              TN                
3     2        20130328        1230            20130328.1230.001   -37.996300   -44.998833    1       503.511    507.93    1     1.4213   19.4291   6.7561    0.0302   0.0315   51.2173696997995  20.7784658584056  
3     2        20130328        1230            20130328.1230.001   -37.996300   -44.998833    4       219.829    221.605   4     0.641    7.2403    2.2037    0.0418   0.0288   58.5463343725886  8.86838318309575  
4     2        20130328        2309            20130328.2309.001   -37.997826   -44.998981    1       1997.181   2021.96   1     2.1096   29.3272   54.9077   0.0279   0.1465   43.6797075405155  30.7738007289827  
4     2        20130328        2309            20130328.2309.001   -37.997826   -44.998981    2       1473.625   1490.041  2     2.4022   34.5652   55.9738   0.0337   0.0343   41.2981009299274  36.3448887060556  
4     2        20130328        2309            20130328.2309.001   -37.997826   -44.998981    4       755.341    762.434   4     1.8755   27.554    14.5476   0.0295   0.0329   43.4832863767557  27.2354070138148  
4     2        20130328        2309            20130328.2309.001   -37.997826   -44.998981    20      150.729    151.921   20    0.4768   4.8796    2.1876    0.0525   0.1686   57.2389060013122  6.73530895763992