Rock River at Joslin, IL (Agency code: 05446500)

Descriptive Statistics of Concentration Data

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl   SiO2_Si
Total obs. =       186       192        80       193        56       113       176       137
Start date =  11/13/74  11/13/74  09/28/79  11/13/74  02/14/78  05/08/75  11/13/74  11/13/74
End date   =  05/11/94  05/11/94  05/11/94  05/11/94  05/11/94  11/09/93  05/11/94  05/11/94
Mx smp int days=   119       119       134       119      1320       202       162       195
Mean samp int=    38.5      37.3      67.6      37.1       108      60.4      40.7      52.3
Stdv samp int=    17.4      16.0      36.6      16.0       170      38.7      23.7      35.3
Mean conc. =      4.81      3.13     0.151     0.323     0.110     125.2      30.9      2.63
Stdev conc.=      1.45      1.45     0.238     0.178     0.085     102.6       7.9      1.75
Min conc.  =      1.70      0.04     0.000     0.040     0.010      12.0      17.0      0.05
25% conc.  =      3.80      2.30     0.020     0.235     0.030      62.0      26.0      0.98
Med. conc. =      4.65      3.00     0.040     0.300     0.110     105.0      29.0      2.99
75% conc.  =      5.70      4.08     0.185     0.370     0.165     154.0      34.0      3.83
Max conc.  =      8.60      6.60     1.200     1.900     0.350     678.0      72.0      7.01

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))