Mississippi River at St. Paul, MN (Agency code: UM 839.1) 

Descriptive Statistics of Concentration Data (Milligrams/Liter)

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl
Total obs. =       376       583       875       613       381       583        45
Start date =  01/07/76  01/07/76  01/07/76  01/07/76  03/15/77  01/07/76  05/05/92
End date   =  12/17/96  12/17/96  12/17/96  12/17/96  12/17/96  12/17/96  12/17/96
Mx smp int days=   315        35        62        35        85        35       100
Mean samp int=    20.4      13.1       8.8      12.5      19.0      13.1      38.3
Stdv samp int=    20.3       5.5       4.2       5.5      10.4       5.5      37.8
Mean conc. =      2.79      1.76     0.234     0.162     0.072      43.6      19.8
Stdev conc.=      1.57      1.54     0.232     0.082     0.049      48.9      14.7
Min conc.  =      0.50      0.04     0.020     0.010     0.005       1.0       9.0
25% conc.  =      1.67      0.61     0.070     0.110     0.037      12.0      14.0
Med. conc. =      2.35      1.30     0.150     0.140     0.066      30.0      17.0
75% conc.  =      3.50      2.52     0.330     0.200     0.098      55.0      20.0
Max conc.  =     10.36      9.65     1.700     0.630     0.330     346.0     109.0

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)