chl

 PI:             Jan Newton/James Murray
 dataset:        CTD Fluorometric chlorophyll a and total phaeopigment
 project/cruise: EQPAC/TT007
 ship:           Thomas Thompson

 PI note:  Due to chlorophyll degradation by the acetone (reagent grade,
           in cans) the data for the following CTD casts have been deleted
           from the file:  1, 3, 5, 6, 7, 8, 20, 23, 25, 30, 33, 35, 37 and 38.


 Parameter       Description                                     Units 

 event           event/operation number from event log
 sta             station number from event log
 cast            CTD cast number from event log
 comment         free text data quality notes
 bot             CTD rosette bottle number
 depth_n         nominal sample depth                            meters
 fluor_vol_filt  volume of sample filtered                       liters
 scale           sensitivity scale on the fluorometer
 df              door factor; true value of sensitivity scale
 B               undefined
 Fo              original fluorometer reading
 Fa              fluorometer reading after 2 drops 1N HCL
 chl_a_fluor     chlorophyll a; fluorometric method              micrograms/liter
 phaeo           total phaeopigment                              micrograms/liter
 Fo_to_Fa        Fo to Fa ratio. ranges between
                    max. 2.10, all chlorophyll-a no Phaeopigment
                    min. 1.00, no chlorophyll-a all Phaeopigment