event  cast  cycle     date_local  lat       lon        depth  niskin  taxon               size_class  abundance  
304    25    Cycle_2   07042010    9.04192   -90.56041  40     10      prymnesiophytes     lt2         0          
304    25    Cycle_2   07042010    9.04192   -90.56041  40     10      prymnesiophytes     2_to_10     554        
304    25    Cycle_2   07042010    9.04192   -90.56041  40     10      prymnesiophytes     10_to_20    0          
304    25    Cycle_2   07042010    9.04192   -90.56041  40     10      prymnesiophytes     total       554