Mississippi River at Ninniger, MN (Agency code: 05331570)

Descriptive Statistics of Concentration Data (Milligrams/Liter)

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl   SiO2_Si
Total obs. =        85        90        69        90        53        79        92        92
Start date =  01/31/78  10/18/77  11/07/79  10/18/77  11/16/81  11/28/77  10/18/77  10/18/77
End date   =  03/17/95  03/17/95  03/17/95  03/17/95  03/17/95  03/18/94  03/17/95  03/17/95
Mx smp int days=   364       364       364       364       364       278       204       204
Mean samp int=    74.5      71.4      82.5      71.4      93.6      76.3      69.9      69.9
Stdv samp int=    45.2      44.9      45.8      44.9      46.3      46.0      35.0      35.0
Mean conc. =      3.93      2.29     0.443     0.236     0.129      43.1      25.0      5.47
Stdev conc.=      2.14      1.97     0.395     0.112     0.069      33.2      10.0      2.00
Min conc.  =      1.20      0.10     0.010     0.040     0.010       1.0      11.0      0.33
25% conc.  =      2.60      0.98     0.130     0.170     0.080      12.0      18.0      4.49
Med. conc. =      3.30      1.60     0.330     0.220     0.130      37.0      23.0      5.84
75% conc.  =      4.40      2.90     0.700     0.270     0.170      65.0      29.0      6.78
Max conc.  =     12.00     10.00     1.500     0.970     0.320     139.0      68.0      9.82

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))