Mississippi River at French Island spillway near Lock and Dam 7 (Agency code: M702.7T)

Descriptive Statistics of Concentration Data (Milligrams/Liter) 

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl   SiO2_Si
Total obs. =       120       126       126       110       121       122       119       119
Start date =  05/06/93  05/06/93  05/06/93  05/06/93  05/06/93  05/06/93  05/06/93  05/06/93
End date   =  05/05/98  05/05/98  05/05/98  05/05/98  04/24/98  05/05/98  04/24/98  04/24/98
Mx smp int days=    43        36        36        83        70        36        70        70
Mean samp int=    15.3      14.6      14.6      16.7      15.1      15.1      15.4      15.4
Stdv samp int=     6.1       4.3       4.3       9.9       6.6       5.0       7.2       7.0
Mean conc. =      1.79      1.05     0.094     0.130     0.058      12.4      10.4      4.76
Stdev conc.=      0.73      0.59     0.113     0.072     0.039      22.6       3.8      1.88
Min conc.  =      0.68      0.01     0.001     0.001     0.001       0.7       3.4      0.42
25% conc.  =      1.31      0.62     0.030     0.082     0.031       4.5       7.7      3.35
Med. conc. =      1.64      1.03     0.058     0.118     0.053       8.3      10.0      5.15
75% conc.  =      2.10      1.43     0.112     0.156     0.081      13.6      13.1      6.31
Max conc.  =      5.97      2.90     0.666     0.493     0.198     237.1      21.7      8.51

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)