Mississippi River at Clinton, IA (Agency code: 05420500)

Descriptive Statistics of Concentration Data (Milligrams/Liter)

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl   SiO2_Si
Total obs. =       150       174       122       154        98       136       101        95
Start date =  02/11/74  02/11/74  10/02/79  02/11/74  11/09/81  11/12/74  02/11/74  02/11/74
End date   =  08/20/93  09/08/93  09/08/93  08/20/93  09/08/93  07/27/92  08/20/93  08/20/93
Mx smp int days=  1379      1316      1673      1379      1673      1379      2187      2544
Mean samp int=    47.9      41.3      42.1      46.6      44.5      47.9      71.3      75.9
Stdv samp int=     119       107       156       118       174       122       217       260
Mean conc. =      2.61      1.56     0.085     0.171     0.064      68.8      11.8      3.41
Stdev conc.=      1.03      1.04     0.096     0.087     0.029      63.3       2.7      1.82
Min conc.  =      0.74      0.01     0.000     0.020     0.010       2.0       5.3      0.00
25% conc.  =      1.90      0.78     0.030     0.115     0.040      33.5       9.8      2.06
Med. conc. =      2.50      1.40     0.060     0.165     0.060      52.0      11.0      3.93
75% conc.  =      3.40      2.30     0.100     0.210     0.080      84.5      13.0      4.63
Max conc.  =      5.10      4.20     0.570     0.760     0.140     454.0      21.0      6.54

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))