Mississippi River downstream of Lock and Dam 26 (Agency code: M196.9Q) 

Descriptive Statistics of Concentration Data (Milligrams/Liter)

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl   SiO2_Si
Total obs. =       108       114       115       100       113       113       112       112
Start date =  05/05/93  05/05/93  05/05/93  05/05/93  05/05/93  05/05/93  05/05/93  05/05/93
End date   =  04/23/98  04/23/98  04/23/98  04/23/98  04/23/98  04/23/98  04/23/98  04/23/98
Mx smp int days=    93        78        78        93        78        78        78        78
Mean samp int=    17.0      16.1      15.9      18.3      16.2      16.2      16.3      16.3
Stdv samp int=    10.7       8.6       8.4      13.3       8.5       8.6       8.6       8.6
Mean conc. =      3.35      2.49     0.098     0.205     0.053      83.9      21.5      3.85
Stdev conc.=      1.10      1.05     0.129     0.092     0.040     107.8      11.0      1.42
Min conc.  =      1.21      0.63     0.001     0.070     0.001       7.4       9.5      0.12
25% conc.  =      2.55      1.68     0.030     0.143     0.026      28.4      15.5      3.00
Med. conc. =      3.37      2.48     0.048     0.186     0.046      50.8      18.8      4.20
75% conc.  =      4.24      3.25     0.106     0.239     0.068      92.5      24.6      4.83
Max conc.  =      6.33      4.88     0.801     0.478     0.198     826.9      86.6      6.14

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)
TSS     = Total Suspended Solids
Cl      = Dissolved Chloride (as Cl)
SiO2_Si = Dissolved Silicon (as Si)