Mississippi River upstream from Lock & Dam 13 (Agency code: M525.5L) 

Desriptive Statistics of Concentration Data (Milligrams/Liter)

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl   SiO2_Si
Total obs. =       151       153       153       143       118       151       152       151
Start date =  06/13/91  06/13/91  06/13/91  06/13/91  06/13/91  06/13/91  06/13/91  06/13/91
End date   =  06/17/98  06/17/98  06/17/98  06/17/98  06/17/98  06/17/98  06/17/98  06/17/98
Mx smp int days=    70       146       146        81       372        70       110       146
Mean samp int=    17.1      16.8      16.8      18.0      21.9      17.1      17.0      17.1
Stdv samp int=     9.3      12.4      12.4      11.4      36.2       9.4      10.2      12.5
Mean conc. =      2.54      1.57     0.094     0.178     0.049      42.8      13.8      4.25
Stdev conc.=      0.89      0.77     0.120     0.105     0.037      50.6       2.7      1.73
Min conc.  =      0.97      0.12     0.001     0.001     0.001       0.0       1.0      0.01
25% conc.  =      1.93      1.04     0.030     0.099     0.018      13.2      12.0      3.60
Med. conc. =      2.50      1.59     0.060     0.158     0.045      32.5      13.7      4.50
75% conc.  =      3.05      2.01     0.112     0.223     0.076      52.4      15.3      5.60
Max conc.  =      6.32      5.04     0.800     0.709     0.178     420.6      25.2      7.43

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)