event  cast  cycle  date      event_lat  event_lon   depth  sample  nitrate     NO3_uptake  
564    45    3      07102010  10.1724    -92.94682   2      9-1     0.540731    0.102014    
564    45    3      07102010  10.1724    -92.94682   12     9-2     0.721029    0.091057    
564    45    3      07102010  10.1724    -92.94682   20     9-3     4.540664    0.008787    
564    45    3      07102010  10.1724    -92.94682   30     9-4     23.896283   0.043636    
564    45    3      07102010  10.1724    -92.94682   45     9-5     28.906642   0.048735    
564    45    3      07102010  10.1724    -92.94682   60     9-6     31.097533   0.042616    
564    45    3      07102010  10.1724    -92.94682   80     9-7     31.740368   0.036601    
564    45    3      07102010  10.1724    -92.94682   100    9-8     32.173433   0.042387