event  cast  cycle  date      event_lat  event_lon   depth  sample  nitrate     NO3_uptake  
662    53    3      07122010  9.97462    -92.91646   2      11-1    0.537530    0.185957    
662    53    3      07122010  9.97462    -92.91646   12     11-2    1.006112    0.017548    
662    53    3      07122010  9.97462    -92.91646   20     11-3    7.490936    0.028800    
662    53    3      07122010  9.97462    -92.91646   30     11-4    24.750583   0.028973    
662    53    3      07122010  9.97462    -92.91646   45     11-5    29.914351   0.045446    
662    53    3      07122010  9.97462    -92.91646   60     11-6    31.351716   0.049838    
662    53    3      07122010  9.97462    -92.91646   80     11-7    31.868984   0.045910    
662    53    3      07122010  9.97462    -92.91646   100    11-8    32.354550   0.043539