event  cast  cycle     date_local  lat       lon        depth  niskin  taxon               size_class  abundance  
416    33    Cycle_2   07062010    8.97098   -90.49760  20     16      prymnesiophytes     lt2         0          
416    33    Cycle_2   07062010    8.97098   -90.49760  20     16      prymnesiophytes     2_to_10     1618       
416    33    Cycle_2   07062010    8.97098   -90.49760  20     16      prymnesiophytes     10_to_20    0          
416    33    Cycle_2   07062010    8.97098   -90.49760  20     16      prymnesiophytes     total       1618