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STATISTICS for PERU

STATISTICS FOR PERU


GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-02-15   PAGE 458

 STATION - RIO RIMAC LIMA                           STATION NO. 032003
 COUNTRY - PERU                                     DEPTH(M)       2.5
 LOCATION - OCT. 5  LAT. 12/01/10  LONG. 076/57/48  ELEVATION(M) 265.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1983-03-15 TO 1983-09-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC         CN     NO3NO2         O2          F
                             COND                             DISS       DISS
                            02041      06606      07105      08101      09104
                            us/cm    mg/L Cn     mg/L N    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       13          4          9         13         11
 MEAN                        636.      0.047       3.16        9.3        0.4
 MINIMUM                     474.      0.020       1.22        6.0        0.1
 DATE OF MINIMUM       1983-03-31 1983-05-15 1983-09-15 1983-06-15 1983-05-15
 10TH PERCENTILE             506.                              6.1        0.1
 MEDIAN                      662.      0.035       2.51        8.2        0.3
 90TH PERCENTILE             683.                             12.5        0.8
 MAXIMUM                     695.      0.100       7.46       19.8        0.9
 DATE OF MAXIMUM       1983-06-30 1983-04-30 1983-06-30 1983-03-15 1983-06-30
 STANDARD DEVIATION           61.      0.038       1.94        3.7        0.3




                              ALK         pH   SUSP SOL         Na         Mg
                            TOTAL               105 DEG       DISS       DISS
                            10102      10302      10401      11105      12103
                             mg/L   pH UNITS       mg/L    mg/L Na    mg/L Mg


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       13         13         13         11         13
 MEAN                      111.08        8.0      1575.        20.        19.
 MINIMUM                    92.00        7.4        70.        12.         3.
 DATE OF MINIMUM       1983-09-15 1983-03-15 1983-08-30 1983-05-15 1983-09-15
 10TH PERCENTILE            94.40        7.5        78.        12.         5.
 MEDIAN                    105.00        7.9       230.        18.        21.
 90TH PERCENTILE           119.40        8.3      3925.        26.        26.
 MAXIMUM                   170.00        8.5     12046.        27.        27.
 DATE OF MAXIMUM       1983-03-31 1983-09-15 1983-03-31 1983-06-15 1983-03-15
 STANDARD DEVIATION         19.07        0.3      3422.         5.         7.




                               Si      PO4-P        PO4   SULPHATE         Cl
                         REACTIVE        SOL      TOTAL                  DISS
                            14101      15254      15403      16301      17201
                         mg/LSiO2   mg/L PO4   mg/L PO4   mg/L SO4    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       13         11         11         13         13
 MEAN                       66.46     12.982     22.391       148.        20.
 MINIMUM                     9.00      0.700      5.800       115.        12.
 DATE OF MINIMUM       1983-05-31 1983-09-15 1983-09-15 1983-04-30 1983-04-30
 10TH PERCENTILE             9.60      0.910      5.870       116.        13.
 MEDIAN                     20.00      6.400     12.800       155.        19.
 90TH PERCENTILE           103.70     34.100     56.840       176.        29.
 MAXIMUM                   500.00     48.000     70.000       192.        31.
 DATE OF MAXIMUM       1983-03-31 1983-03-31 1983-03-15 1983-06-15 1983-06-30
 STANDARD DEVIATION        133.90     15.346     22.201        26.         6.





                                K         Ca         Mn         Fe         Cu
                             DISS       DISS       DISS      TOTAL       DISS
                            19105      20101      25105      26005      29105
                           mg/L K    mg/L Ca    mg/L Mn    mg/L Fe    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         13         13         13         13
 MEAN                         3.9     86.062       1.49      32.77      0.226
 MINIMUM                      1.6     66.800       0.12       0.85      0.000
 DATE OF MINIMUM       1983-07-31 1983-07-31 1983-07-15 1983-07-15 1983-08-30
 10TH PERCENTILE              1.6     68.480       0.12       1.18      0.018
 MEDIAN                       3.6     84.000       0.32       5.50      0.120
 90TH PERCENTILE              6.9    102.680       2.81      59.80      0.350
 MAXIMUM                      8.1    108.000       9.10     284.00      0.980
 DATE OF MAXIMUM       1983-03-31 1983-04-30 1983-03-15 1983-03-15 1983-03-15
 STANDARD DEVIATION           2.1     11.795       2.50      78.26      0.253




                               Zn         As         Cd         Pb
                             DISS       DISS       DISS       DISS
                            30105      33103      48101      82101
                          mg/L Zn    mg/L As    mg/L Cd    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       13         11          7         13
 MEAN                       1.063      0.135      0.084      0.447
 MINIMUM                    0.150      0.010      0.000      0.020
 DATE OF MINIMUM       1983-04-30 1983-05-15 1983-05-15 1983-05-15
 10TH PERCENTILE            0.159      0.010                 0.035
 MEDIAN                     0.580      0.040      0.100      0.220
 90TH PERCENTILE            2.945      0.176                 0.576
 MAXIMUM                    4.000      0.880      0.140      2.700
 DATE OF MAXIMUM       1983-03-31 1983-03-31 1983-04-15 1983-03-15
 STANDARD DEVIATION         1.288      0.254      0.052      0.697




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Last updated: 2001-07-30