cyan

 PI:             Michael Sieracki
 dataset:        Cyanobacteria, phototrophic and heterotrophic pico-nanoplankton
 project/cruise: EQPAC/TT007
 ship:           Thomas Thompson

 Methodology:  U.S. JGOFS Equatorial Pacific Process Study 
               Sampling and Analytical Protocols (section 23)

 PI note: Biomass is calculated using a constant carbon density factor of 220
          femtograms C per um^3 of biovolume, and is expressed in units of
          micrograms of carbon per liter.
          Biovolume is defined as average cell size.


 Parameter    Description                                   Units 
  
 cast         CTD cast number from event log
 sta          station number from event log
 event        event/operation number from event log 
 lat_n        latitude, nominal                             degrees
 bot          CTD rosette bottle number
 depth_n      nominal depth of sample                       meters
 syn_ab       abundance synechococcus-type cyanobacteria    cells/milliliter
 syn_biov     biovolume synechococcus-type cyanobacteria    cubic microns
 syn_biom     biomass synechococcus-type cyanobacteria      micrograms C/liter
 p_ab         abundance phototrophic eucaryotic pico-       cells per liter
                     and nanoplankton
 p_biov       biovolume phototrophic eucaryotic pico-       cubic microns
                     and nanoplankton
 p_biom       biomass phototrophic eucaryotic pico-         micrograms C/liter
                     and nanoplankton
 h_ab         abundance heterotrophic eucayotic pico-       cells per liter
                     and nanoplankton
 h_biov       biovolume heterotrophic eucayotic pico-       cubic microns
                     and nanoplankton
 h_biom       biomass heterotrophic eucayotic pico-         micrograms C/liter
                     and nanoplankton