Mississippi River at Dock upstream of Wabasha Street Bridge, St. Paul, MN (Agency code: UM-840) 

Descriptive Statistics of Concentration Data (Milligrams/Liter)

                  TN_N     NOx_N     NHx_N      TP_P       TSS        Cl
Total obs. =       264       281       300       292       291        88
Start date =  03/07/75  03/07/75  07/17/73  07/17/73  07/17/73  07/17/73
End date   =  09/15/94  06/15/98  06/15/98  08/22/96  08/22/96  05/22/80
Mx smp int days=   154       406       406       440       440        98
Mean samp int=    27.1      30.4      30.4      29.0      29.1      28.7
Stdv samp int=    21.1      38.2      37.0      31.7      31.7      23.4
Mean conc. =      3.48      2.05     0.277     0.219      60.3      18.5
Stdev conc.=      2.35      2.14     0.216     0.148     234.7       9.6
Min conc.  =      0.37      0.01     0.020     0.066       0.5       6.0
25% conc.  =      1.67      0.35     0.160     0.142      12.0      14.0
Med. conc. =      2.79      1.26     0.200     0.184      28.0      17.0
75% conc.  =      4.76      2.99     0.340     0.252      56.0      20.0
Max conc.  =     11.27      9.60     1.300     1.900      3900      82.0

Flow summaries are in the LOADEST2 diagnostic information

TN_N    = Total Nitrogen (as N)
          (Total Kjeldahl Nitrogen + Nitrate + Nitrite)
NOx_N   = Nitrate + Nitrite (as N)
NHx_N   = Total Ammonia (as N)
TP_P    = Total Phosphorus (as P)
TSS     = Total Suspended Solids
Cl      = Total Chloride (as Cl)