St. Croix River near Stillwater, MN (Agency code: SC 23.3) 

Descriptive Statistics of Concentration Data (Milligrams/Liter)

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl
Total obs. =       341       550       855       582       343       550        21
Start date =  01/07/76  01/07/76  01/07/76  01/07/76  03/16/77  01/07/76  05/04/92
End date   =  11/04/96  11/04/96  11/04/96  11/04/96  11/04/96  11/04/96  11/04/96
Mx smp int days=   317        64        64        64        97        64       100
Mean samp int=    22.4      13.9       8.9      13.1      21.0      13.9      82.3
Stdv samp int=    21.6       5.9       4.6       5.9      10.6       5.6      22.6
Mean conc. =      0.99      0.36     0.097     0.060     0.032       9.0       4.5
Stdev conc.=      0.42      0.39     0.125     0.060     0.085       6.7       2.3
Min conc.  =      0.23      0.02     0.010     0.010     0.000       1.0       3.0
25% conc.  =      0.76      0.16     0.020     0.030     0.010       4.0       3.0
Med. conc. =      0.91      0.26     0.060     0.050     0.019       8.0       4.0
75% conc.  =      1.10      0.46     0.110     0.070     0.030      12.0       5.0
Max conc.  =      5.45      5.00     1.500     0.580     1.350      55.0      14.0

Flow summaries are in the LOADEST2 diagnostic information

TN_N    = Total Nitrogen (as N)
          (Total Kjeldahl Nitrogen + Nitrate + Nitrite)
NOx_N   = Total Nitrate + Nitrite (as N)
NHx_N   = Dissolved Ammonia (as N)
TP_P    = Total Phosphorus (as P)
SRP_P   = Soluble Reactive Phosphorus (as P)
          (measured as Orthophosphate) 
TSS     = Total Suspended Solids
Cl      = Dissolved Chloride (as Cl)