Mississippi River at Winona, MN (Agency code: 05378500)

Descriptive Statistics of Concentration Data (Milligrams/Liter)

                  TN_N     NOx_N     NH4xN      TP_P     SRP_P       TSS        Cl   SiO2_Si
Total obs. =        83       105        37       106        22        45       106       106
Start date =  11/07/74  01/11/73  10/30/79  01/11/73  10/06/81  04/25/75  01/11/73  01/11/73
End date   =  08/20/86  08/20/86  08/20/86  08/20/86  08/20/86  08/23/94  08/20/86  08/20/86
Mx smp int days=   181       133       133       133       133      1077       133       133
Mean samp int=    52.5      47.8      69.1      47.3      84.7       160      47.3      47.3
Stdv samp int=    31.7      24.3      28.4      24.1      27.1       219      24.1      24.1
Mean conc. =      2.20      1.14     0.152     0.150     0.074      23.5      12.3      4.57
Stdev conc.=      1.09      0.85     0.162     0.047     0.030      13.9       3.7      1.81
Min conc.  =      0.14      0.01     0.000     0.030     0.020       2.0       5.7      0.05
25% conc.  =      1.40      0.58     0.040     0.120     0.040      14.0       9.4      3.65
Med. conc. =      2.10      0.99     0.070     0.150     0.080      20.0      12.0      5.14
75% conc.  =      2.60      1.50     0.240     0.170     0.100      31.0      15.0      6.08
Max conc.  =      5.90      4.50     0.620     0.280     0.110      62.0      28.0      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))