Mississippi River at St. Paul, MN (Agency code: 05331000)

Descriptive Statistics of Concentration Data (Milligrams/Liter)

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl   SiO2_Si
Total obs. =        56        58        40        37         0        44        58        41
Start date =  01/03/73  01/03/73  01/03/73  08/01/73         .  01/22/74  01/03/73  08/01/73
End date   =  08/31/77  09/26/77  12/22/76  09/26/77         .  09/26/77  09/26/77  09/26/77
Mx smp int days=    56        53       119       205         .        49        53       126
Mean samp int=    30.9      30.3      37.2      42.1         .      31.2      30.3      37.9
Stdv samp int=     9.7       9.0      19.0      35.3         .       8.0       9.0      19.5
Mean conc. =      2.53      1.00     0.221     0.186         .      84.3      16.1      4.27
Stdev conc.=      1.77      1.48     0.234     0.087         .      95.8       8.2      1.68
Min conc.  =      0.89      0.01     0.010     0.030         .       4.0       6.0      0.89
25% conc.  =      1.45      0.20     0.085     0.120         .      33.0      12.0      2.76
Med. conc. =      1.85      0.45     0.170     0.170         .      62.5      14.0      4.30
75% conc.  =      3.00      1.10     0.285     0.240         .      89.0      18.0      5.61
Max conc.  =      9.80      8.00     1.200     0.400         .     564.0      51.0      7.95

Flow summaries are in the LOADEST2 diagnostic information

TN_N    = Total Nitrogen (as N)
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 Dissolved Orthophosphate) 
TSS     = Total Suspended Solids
Cl      = Dissolved Chloride (as Cl)
SiO2_Si = Dissolved Silicon (as Si)
          (Converted from original concentrations measured 
           as Dissolved Silica (as SiO2))