event  cast  cycle  date      event_lat  event_lon   depth  sample  nitrate     NO3_uptake  
1001   75    5      07212010  9.09438    -88.18458   2      17-1    1.657923    0.130423    
1001   75    5      07212010  9.09438    -88.18458   12     17-2    1.754118    0.101850    
1001   75    5      07212010  9.09438    -88.18458   20     17-3    2.083413    0.125901    
1001   75    5      07212010  9.09438    -88.18458   30     17-4    19.311185   0.168043    
1001   75    5      07212010  9.09438    -88.18458   40     17-5    21.517603   0.165860    
1001   75    5      07212010  9.09438    -88.18458   50     17-6    24.944938   0.159422    
1001   75    5      07212010  9.09438    -88.18458   70     17-7    28.824560   0.186796    
1001   75    5      07212010  9.09438    -88.18458   100    17-8    27.163894   0.210170