event  cast  cycle  date      event_lat  event_lon   depth  sample  nitrate     NO3_uptake  
91     9     1      06262010  9.59706    -86.82898   2      3-1     0.047059    0.060177    
91     9     1      06262010  9.59706    -86.82898   12     3-2     0.102058    0.035125    
91     9     1      06262010  9.59706    -86.82898   20     3-3     0.084154    0.025591    
91     9     1      06262010  9.59706    -86.82898   30     3-4     1.119075    0.097921    
91     9     1      06262010  9.59706    -86.82898   40     3-5     22.233902   0.007791    
91     9     1      06262010  9.59706    -86.82898   55     3-6     29.024060   0.011335    
91     9     1      06262010  9.59706    -86.82898   70     3-7     31.359926   0.013514    
91     9     1      06262010  9.59706    -86.82898   90     3-8     31.841608   0.045081