Meramec River at Eureka, MO (Agency code: 07019000)

Descriptive Statistics of Concentration Data (Milligrams/Liter)

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl   SiO2_Si
Total obs. =       100       117        96       117        78       110       118       118
Start date =  02/06/78  01/04/78  10/18/79  01/04/78  11/05/81  01/04/78  01/04/78  01/04/78
End date   =  06/07/94  06/07/94  06/07/94  06/07/94  06/07/94  09/29/93  04/06/94  04/06/94
Mx smp int days=   188       133       133       133       133       120        85        85
Mean samp int=    60.3      51.7      56.3      51.7      59.7      52.7      50.7      50.7
Stdv samp int=    32.7      19.6      18.6      19.6      17.6      19.4      16.8      16.8
Mean conc. =      0.82      0.27     0.043     0.059     0.018     124.7       6.7      3.04
Stdev conc.=      0.44      0.21     0.059     0.076     0.011     261.6       2.4      1.21
Min conc.  =      0.20      0.00     0.000     0.010     0.010       1.0       1.6      0.05
25% conc.  =      0.50      0.10     0.010     0.030     0.010      18.0       5.3      2.20
Med. conc. =      0.76      0.18     0.030     0.040     0.010      36.0       6.3      3.20
75% conc.  =      1.10      0.41     0.060     0.070     0.020      94.0       7.9      3.83
Max conc.  =      2.30      0.82     0.480     0.700     0.070      1910      21.0      7.48

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))