Mississippi River below Grafton, IL (Agency code: 05587455)

Descriptive Statistics of Concentration Data (Milligrams/Liter)

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl   SiO2_Si
Total obs. =        48        48        48        48        48        35        45        45
Start date =  03/14/89  03/14/89  03/14/89  03/14/89  03/14/89  05/04/89  03/14/89  03/14/89
End date   =  09/14/94  09/14/94  09/14/94  09/14/94  09/14/94  09/14/94  09/14/94  09/14/94
Mx smp int days=    98        98        98        98        98       293        98        98
Mean samp int=    42.8      42.8      42.8      42.8      42.8      57.6      45.7      45.7
Stdv samp int=    22.6      22.6      22.6      22.6      22.6      55.5      23.0      23.0
Mean conc. =      3.79      2.73     0.086     0.210     0.086     157.7      23.9      2.94
Stdev conc.=      1.38      1.38     0.103     0.091     0.035     137.6       7.9      1.67
Min conc.  =      1.40      0.10     0.010     0.090     0.010      16.0      12.0      0.17
25% conc.  =      2.80      1.58     0.030     0.148     0.060      61.0      19.0      1.45
Med. conc. =      3.60      2.75     0.040     0.185     0.090     102.0      23.0      3.13
75% conc.  =      4.80      3.75     0.115     0.240     0.110     235.0      27.0      4.25
Max conc.  =      6.30      5.40     0.540     0.460     0.190     506.0      47.0      6.08

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))