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                
8     2        20130329        1905            20130329.1905.001   -38.002600   -44.999921    1       101.167    101.955   1     0.4097   3.7634    1.6292    0.0583   0.0361   55.3327878448869  6.00165139839989  
8     2        20130329        1905            20130329.1905.001   -38.002600   -44.999921    16      5.316      5.356     16    0.1843   0.352     1.0548    0.0349   0.0334   70.1229067116844  3.96231246454734