Submitted Data file =  98081dat.wb1 (renamed to nutrients-proc-1998-081.txt)
Cruise: PROC-1998-081
Ship: R/V Laurentian
Cruise Dates:  March 22 - April 3, 1998
PI: Tom Johengen   Ph#: 734-741-2203   Email:  tom.johengen@noaa.gov
Data type: 
Particulate and dissolved nutrients on discrete water samples
Total Dissolved Phosphorus (TDP) : molybdate/ascorbic acid method on 
   AutoAnalyzer II, after persulfate digestion of 0.2 uM filtered samples
Particulate Phosphorus (PP) : molybdate/ascorbic acid method on AutoAnalyzer II, 
   after combustion, boiling HCL extraction of particles retained on a GFF filter
Bioavailable Phosphorus (AVP) : molybdate/ascorbic acid method on AutoAnalyzer II, 
   after NaOH digestion of particles retained on 0.2 uM nucleopore filter
Particulate Silica  (PSiO2) : molybdate/ascorbic acid method on AutoAnalyzer II, 
   after NaOH digestion of particles retained on 0.2 uM nucleopore filter
Soluble Reactive Phosphorus (SRP) : molybdate/ascorbic acid method on AutoAnalyzer II, 
   of  0.2 uM filtered samples
Nitrate + Nitrite (NO3): cadium reduction method on AutoAnalyzer II, of 0.2 uM 
   filtered samples
Ammonium (NH4): phenol method on AutoAnalyzer II, of 0.2 uM filtered samples
Particulate Organic Carbon (POC): Perkin Elmer CHN elemental analyzer
Particulate Organic Nitrogen (PON): Perkin Elmer CHN elemental analyzer
TDP coeff of variance on field reps = 7.6%  (n=9)
PP coeff of variance on field reps = 6.0%    (n=7)
AVP coeff of variance on field reps = 2.5%    (n=4)
NO3 coeff of variance on duplicates = 0.7% (n=4)
NH4 coeff of variance on duplicates = 17.2% (n=4)
SRP coeff of variance on duplicates = 32.1% (n=4)
POC coeff of variance on duplicates = 13.7%   (n=9 pairs)
PON coeff of variance on duplicates = 17.7%   (n=9 pairs)