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STATISTICS for KENYA

STATISTICS FOR KENYA


GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-02-15   PAGE 332

 STATION - LAKE NAIVASHA                            STATION NO. 112001
 COUNTRY - KENYA                                    DEPTH(M)    9999.9
 LOCATION - OCT. 8  LAT. 15/00/00  LONG. 036/00/00  ELEVATION(M)  11.0
 REGIONAL CENTRE - AFRA                             WATER TYPE   LAKE       

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-04-26 TO 1984-02-10

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      NO2-N      NO3-N        NH3
                             COND                                            
                            02041      02062      07207      07306      07555
                            us/cm      deg C     mg/L N     mg/L N     mg/L N


 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         11          1          1          1
 MEAN                        273.       20.2       0.00       1.30       0.01
 MINIMUM                     140.       19.0                                 
 DATE OF MINIMUM       1984-02-10 1982-05-06                                 
 10TH PERCENTILE             141.       19.0                                 
 MEDIAN                      250.       20.0                                 
 90TH PERCENTILE             353.       21.0                                 
 MAXIMUM                     700.       22.0                                 
 DATE OF MAXIMUM       1982-04-26 1983-07-30                                 
 STANDARD DEVIATION          157.        1.0                                 




                                F        ALK         pH         Mg    P ORTHO
                             DISS      TOTAL                  DISS      TOTAL
                            09105      10101      10302      12103      15205
                           mg/L F       mg/L   pH UNITS    mg/L Mg     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         11         11         10          2
 MEAN                         1.1     112.45        7.9         7.      0.323
 MINIMUM                      0.4      42.00        7.1         4.           
 DATE OF MINIMUM       1984-02-10 1984-02-10 1982-04-26 1982-05-13           
 10TH PERCENTILE                       43.60        7.1         4.           
 MEDIAN                       1.3     123.00        7.9         7.           
 90TH PERCENTILE                      162.40        8.2         9.           
 MAXIMUM                      1.6     186.00        8.3        10.           
 DATE OF MAXIMUM       1983-11-17 1983-01-10 1983-11-17 1983-01-22           
 STANDARD DEVIATION           0.4      47.00        0.4         2.           




                         SULPHATE         Cl         Ca         Mn         Fe
                                        DISS       DISS      TOTAL      TOTAL
                            16302      17201      20101      25004      26004
                         mg/L SO4    mg/L Cl    mg/L Ca    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         11         10          7          6
 MEAN                          1.        21.     17.360       0.17       1.54
 MINIMUM                       0.         3.      5.600       0.02       0.10
 DATE OF MINIMUM       1983-01-22 1982-05-24 1984-02-10 1984-02-10 1982-05-24
 10TH PERCENTILE                          3.      5.600                      
 MEDIAN                        1.        11.     20.500       0.10       0.80
 90TH PERCENTILE                         24.     28.000                      
 MAXIMUM                       6.       113.     28.000       0.40       4.80
 DATE OF MAXIMUM       1984-02-10 1982-05-06 1983-01-22 1982-04-26 1983-01-22
 STANDARD DEVIATION            2.        31.      9.222       0.13       1.58




                               Cu       INST
                            TOTAL     DISCHG
                            29006      97160
                          mg/L Cu       m3/S


 NO. OF L-FLAGGED VALUES        0          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        1         11
 MEAN                       0.180       39.2
 MINIMUM                                11.9
 DATE OF MINIMUM                  1984-02-10
 10TH PERCENTILE                        11.9
 MEDIAN                                 52.8
 90TH PERCENTILE                        57.1
 MAXIMUM                                57.7
 DATE OF MAXIMUM                  1983-01-10
 STANDARD DEVIATION                     21.6





 STATION - SABAKI RIVER                             STATION NO. 112003
 COUNTRY - KENYA                                    DEPTH(M)    9999.9
 LOCATION - OCT. 8  LAT. 03/07/00  LONG. 039/49/20  ELEVATION(M)9999.9
 REGIONAL CENTRE - AFRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-12-22 TO 1984-09-14

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      NO2-N      NO3-N         O2
                             COND                                        DISS
                            02041      02062      07207      07306      08102
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 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         11          1          3          1
 MEAN                        594.       22.9       1.82       0.07        0.7
 MINIMUM                     300.       21.5                                 
 DATE OF MINIMUM       1983-05-30 1983-11-04                                 
 10TH PERCENTILE             301.       21.6                                 
 MEDIAN                      580.       23.0                                 
 90TH PERCENTILE             816.       23.5                                 
 MAXIMUM                     840.       24.0                                 
 DATE OF MAXIMUM       1984-03-28 1982-12-22                                 
 STANDARD DEVIATION          192.        0.7                                 




                                F        ALK         pH         Na         Mg
                             DISS      TOTAL                  DISS       DISS
                            09105      10101      10302      11105      12103
                           mg/L F       mg/L   pH UNITS    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       10         11         11          2         11
 MEAN                         2.4     143.64        8.1        98.        21.
 MINIMUM                      0.6      10.00        7.2                   11.
 DATE OF MINIMUM       1982-12-22 1984-05-29 1982-12-22            1983-08-18
 10TH PERCENTILE              0.6      11.10        7.3                   11.
 MEDIAN                       0.9     144.00        8.1                   21.
 90TH PERCENTILE              1.1     239.60        8.7                   26.
 MAXIMUM                     16.0     269.00        8.7                   50.
 DATE OF MAXIMUM       1984-09-14 1983-06-20 1984-03-28            1984-09-14
 STANDARD DEVIATION           4.8      91.84        0.4                   11.




                          P ORTHO   SULPHATE         Cl          K         Ca
                            TOTAL                  DISS       DISS       DISS
                            15205      16302      17201      19103      20101
                           mg/L P   mg/L SO4    mg/L Cl     mg/L K    mg/L Ca


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9          9         11          2         11
 MEAN                       0.229        35.        62.       27.5     24.791
 MINIMUM                    0.020         5.        25.                 5.700
 DATE OF MINIMUM       1984-03-27 1983-05-11 1983-06-20            1982-12-22
 10TH PERCENTILE                                    26.                 6.430
 MEDIAN                     0.090        33.        66.                26.000
 90TH PERCENTILE                                    85.                31.900
 MAXIMUM                    0.920        64.       104.                43.000
 DATE OF MAXIMUM       1984-09-14 1984-01-18 1982-12-22            1984-05-29
 STANDARD DEVIATION         0.315        18.        25.                 9.965





                               Mn         Fe
                            TOTAL      TOTAL
                            25004      26004
                          mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        4          4
 MEAN                        0.48      16.01
 MINIMUM                     0.01       0.02
 DATE OF MINIMUM       1984-03-27 1984-03-27
 10TH PERCENTILE                            
 MEDIAN                      0.05      12.02
 90TH PERCENTILE                            
 MAXIMUM                     1.80      40.00
 DATE OF MAXIMUM       1982-12-22 1982-12-22
 STANDARD DEVIATION          0.88      19.58





 STATION - TANA RIVER                               STATION NO. 112004
 COUNTRY - KENYA                                    DEPTH(M)    9999.9
 LOCATION - OCT. 8  LAT. 02/16/00  LONG. 040/07/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - AFRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1983-08-17 TO 1984-09-14

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      NO3-N        NH3          F
                             COND                                        DISS
                            02041      02062      07306      07555      09105
                            us/cm      deg C     mg/L N     mg/L N     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        5          6          1          1          5
 MEAN                        252.       22.8       0.04       1.60        0.4
 MINIMUM                     135.       22.0                              0.3
 DATE OF MINIMUM       1983-08-17 1984-01-19                       1984-03-29
 10TH PERCENTILE                                                             
 MEDIAN                      175.       23.0                              0.3
 90TH PERCENTILE                                                             
 MAXIMUM                     700.       23.0                              0.7
 DATE OF MAXIMUM       1984-01-19 1983-11-02                       1984-01-19
 STANDARD DEVIATION          220.        0.4                              0.2




                              ALK         pH         Na         Mg    P ORTHO
                            TOTAL                  DISS       DISS      TOTAL
                            10101      10302      11105      12103      15205
                             mg/L   pH UNITS    mg/L Na    mg/L Mg     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        6          6          2          6          4
 MEAN                      146.00        7.6        14.        10.      0.075
 MINIMUM                    64.00        6.8                    5.      0.040
 DATE OF MINIMUM       1983-11-02 1984-05-28            1984-03-29 1983-11-02
 10TH PERCENTILE                                                             
 MEDIAN                     86.00        7.7                   10.      0.080
 90TH PERCENTILE                                                             
 MAXIMUM                   430.00        7.9                   18.      0.100
 DATE OF MAXIMUM       1984-03-29 1984-09-14            1983-08-17 1984-01-19
 STANDARD DEVIATION        141.84        0.4                    5.      0.030




                         SULPHATE         Cl          K         Ca         Mn
                                        DISS       DISS       DISS      TOTAL
                            16302      17201      19103      20101      25004
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4          6          2          6          2
 MEAN                          3.        16.        6.5     18.500       0.07
 MINIMUM                       1.         6.                13.000           
 DATE OF MINIMUM       1983-08-17 1983-08-17            1983-11-02           
 10TH PERCENTILE                                                             
 MEDIAN                        3.         9.                16.500           
 90TH PERCENTILE                                                             
 MAXIMUM                       7.        52.                30.000           
 DATE OF MAXIMUM       1984-09-14 1984-01-19            1984-01-19           
 STANDARD DEVIATION            3.        18.                 6.156           




                               Fe       INST
                            TOTAL     DISCHG
                            26004      97160
                          mg/L Fe       m3/S


 NO. OF L-FLAGGED VALUES        0          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        2          6
 MEAN                        2.85      114.4
 MINIMUM                                89.7
 DATE OF MINIMUM                  1984-03-29
 10TH PERCENTILE                            
 MEDIAN                                108.3
 90TH PERCENTILE                            
 MAXIMUM                               150.1
 DATE OF MAXIMUM                  1983-11-02
 STANDARD DEVIATION                     21.2





 STATION - THIKA RIVER                              STATION NO. 112005
 COUNTRY - KENYA                                    DEPTH(M)    9999.9
 LOCATION - OCT. 8  LAT. 00/47/50  LONG. 037/15/45  ELEVATION(M)9999.9
 REGIONAL CENTRE - AFRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-05-28 TO 1984-08-31

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          F        ALK         pH
                             COND                  DISS      TOTAL           
                            02041      02062      09105      10101      10302
                            us/cm      deg C     mg/L F       mg/L   pH UNITS


 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         11         12         13
 MEAN                        136.       20.2        0.2      48.17        7.4
 MINIMUM                      55.       19.0        0.1      20.00        6.4
 DATE OF MINIMUM       1982-05-28 1983-04-21 1984-02-03 1982-05-28 1982-05-28
 10TH PERCENTILE              60.       19.0        0.1      20.00        6.6
 MEDIAN                      112.       20.0        0.2      46.00        7.5
 90TH PERCENTILE             215.       21.0        0.4      75.80        7.7
 MAXIMUM                     270.       21.0        0.5      80.00        7.8
 DATE OF MAXIMUM       1984-08-31 1983-09-21 1984-08-31 1984-08-31 1984-04-10
 STANDARD DEVIATION           62.        0.7        0.1      20.48        0.4




                               Na         Mg    P ORTHO   SULPHATE         Cl
                             DISS       DISS      TOTAL                  DISS
                            11105      12103      15205      16302      17201
                          mg/L Na    mg/L Mg     mg/L P   mg/L SO4    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4         12          4         12         11
 MEAN                         20.         3.      0.078         7.        11.
 MINIMUM                       6.         2.      0.010         1.         5.
 DATE OF MINIMUM       1982-05-28 1982-05-28 1983-04-21 1982-12-21 1982-12-21
 10TH PERCENTILE                          2.                    1.         5.
 MEDIAN                       15.         3.      0.030         4.         9.
 90TH PERCENTILE                          5.                   14.        17.
 MAXIMUM                      42.         7.      0.300        23.        22.
 DATE OF MAXIMUM       1984-08-31 1983-03-18 1983-01-27 1984-08-31 1984-08-31
 STANDARD DEVIATION           16.         2.      0.125         7.         5.




                               Ca         Mn         Fe         Se       INST
                             DISS      TOTAL      TOTAL      TOTAL     DISCHG
                            20101      25004      26004      34002      97160
                          mg/L Ca    mg/L Mn    mg/L Fe    mg/L Se       m3/S


 NO. OF L-FLAGGED VALUES        0          1          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11          6          9          1         13
 MEAN                       6.027       0.34       1.75      0.600        2.1
 MINIMUM                    3.000       0.00       0.09                   1.1
 DATE OF MINIMUM       1982-12-21 1983-03-18 1984-04-10            1984-02-03
 10TH PERCENTILE            3.050                                         1.2
 MEDIAN                     6.400       0.10       1.30                   1.5
 90TH PERCENTILE            7.940                                         3.2
 MAXIMUM                   10.000       1.60       4.90                   3.4
 DATE OF MAXIMUM       1983-03-18 1982-05-28 1982-05-28            1982-10-13
 STANDARD DEVIATION         2.200       0.57       1.54                   0.9





 STATION - NAIROBI RIVER                            STATION NO. 112006
 COUNTRY - KENYA                                    DEPTH(M)    9999.9
 LOCATION - OCT. 8  LAT. 01/10/40  LONG. 037/07/10  ELEVATION(M)9999.9
 REGIONAL CENTRE - AFRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-02-16 TO 1984-09-01

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2      NO2-N      NO3-N
                             COND                                            
                            02041      02062      07105      07207      07306
                            us/cm      deg C     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          6          1          2          2
 MEAN                        580.       21.5       1.30       2.60       0.80
 MINIMUM                     400.       21.0                                 
 DATE OF MINIMUM       1983-10-31 1982-02-16                                 
 10TH PERCENTILE                                                             
 MEDIAN                      600.       21.5                                 
 90TH PERCENTILE                                                             
 MAXIMUM                     710.       22.0                                 
 DATE OF MAXIMUM       1984-09-01 1984-05-03                                 
 STANDARD DEVIATION          118.        0.5                                 




                                F        ALK         pH         Na         Mg
                             DISS      TOTAL                  DISS       DISS
                            09105      10101      10302      11105      12102
                           mg/L F       mg/L   pH UNITS    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        6          7          7          5          1
 MEAN                         0.7     190.29        7.4        74.         4.
 MINIMUM                      0.3       0.00        7.1         6.           
 DATE OF MINIMUM       1984-02-22 1982-02-17 1984-02-22 1983-10-31           
 10TH PERCENTILE                                                             
 MEDIAN                       0.7     218.00        7.3        90.           
 90TH PERCENTILE                                                             
 MAXIMUM                      1.0     282.00        7.9       115.           
 DATE OF MAXIMUM       1984-09-01 1984-09-01 1982-10-12 1984-09-01           
 STANDARD DEVIATION           0.2      89.56        0.3        41.           




                               Mg    P ORTHO   SULPHATE         Cl          K
                             DISS      TOTAL                  DISS       DISS
                            12103      15205      16302      17201      19103
                          mg/L Mg     mg/L P   mg/L SO4    mg/L Cl     mg/L K


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        6          1          6          7          2
 MEAN                         18.      0.480         9.        45.       23.8
 MINIMUM                       4.                    0.        24.           
 DATE OF MINIMUM       1982-02-16            1982-02-17 1982-02-17           
 10TH PERCENTILE                                                             
 MEDIAN                        6.                    9.        43.           
 90TH PERCENTILE                                                             
 MAXIMUM                      68.                   15.        64.           
 DATE OF MAXIMUM       1984-05-03            1984-02-22 1984-09-01           
 STANDARD DEVIATION           25.                    6.        16.           




                               Ca         Ca         Mn         Mn         Fe
                             DISS       DISS      TOTAL       DISS      TOTAL
                            20101      20105      25004      25104      26004
                          mg/L Ca    mg/L Ca    mg/L Mn    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          1          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        6          1          2          1          3
 MEAN                      17.433     17.600       0.10       0.00       0.35
 MINIMUM                   12.000                                        0.10
 DATE OF MINIMUM       1982-10-12                                  1984-09-01
 10TH PERCENTILE                                                             
 MEDIAN                    16.800                                        0.40
 90TH PERCENTILE                                                             
 MAXIMUM                   23.000                                        0.52
 DATE OF MAXIMUM       1984-09-01                                  1984-05-03
 STANDARD DEVIATION         4.364                                        0.18





 STATION - LAKE VICTORIA,KISUMU                     STATION NO. 112008
 COUNTRY - KENYA                                    DEPTH(M)       5.0
 LOCATION - OCT. 8  LAT. 00/15/29  LONG. 034/35/29  ELEVATION(M)1136.0
 REGIONAL CENTRE - AFRA                             WATER TYPE   LAKE       

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-05-13 TO 1984-07-31

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      TRANS      NO2-N      NO3-N
                             COND                                            
                            02041      02062      02076      07207      07306
                            us/cm      deg C          m     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       17         11         11          1          1
 MEAN                         14.       25.6        0.8       0.00       1.30
 MINIMUM                      12.       23.8        0.7                      
 DATE OF MINIMUM       1984-07-28 1984-07-31 1984-07-31                      
 10TH PERCENTILE              12.       23.9        0.7                      
 MEDIAN                       14.       26.0        0.9                      
 90TH PERCENTILE              15.       26.2        0.9                      
 MAXIMUM                      20.       26.5        0.9                      
 DATE OF MAXIMUM       1982-05-13 1984-06-08 1984-07-28                      
 STANDARD DEVIATION            2.        0.8        0.1                      




                              NH3         O2          F        ALK         pH
                                        DISS       DISS      TOTAL           
                            07555      08102      09105      10101      10302
                           mg/L N    mg/L O2     mg/L F       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1         11          4         17         17
 MEAN                        0.01        8.9        0.6      88.63        8.3
 MINIMUM                                 6.8        0.4       5.50        7.7
 DATE OF MINIMUM                  1984-07-31 1984-02-10 1982-05-25 1982-05-24
 10TH PERCENTILE                         6.8                  5.71        7.8
 MEDIAN                                  7.7        0.7      63.00        8.2
 90TH PERCENTILE                         8.2                 71.73        8.8
 MAXIMUM                                23.0        0.8     636.00        8.9
 DATE OF MAXIMUM                  1983-08-01 1982-05-24 1984-07-27 1984-07-28
 STANDARD DEVIATION                      4.7        0.2     142.45        0.4




                               Mg         Si    P ORTHO          P   SULPHATE
                             DISS   REACTIVE      TOTAL      TOTAL           
                            12103      14101      15205      15405      16302
                          mg/L Mg   mg/LSiO2     mg/L P     mg/L P   mg/L SO4


 NO. OF L-FLAGGED VALUES        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4          1          0          1          5
 MEAN                          5.       0.10      0.010      0.200         2.
 MINIMUM                       4.                                          0.
 DATE OF MINIMUM       1982-05-13                                  1982-05-25
 10TH PERCENTILE                                                             
 MEDIAN                        4.                                          0.
 90TH PERCENTILE                                                             
 MAXIMUM                       9.                                          6.
 DATE OF MAXIMUM       1984-02-10                                  1984-02-10
 STANDARD DEVIATION            3.                                          2.




                               Cl         Ca         Mn         Fe         Cu
                             DISS       DISS       DISS       DISS       DISS
                            17201      20101      25104      26104      29105
                          mg/L Cl    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        6          4          4          3          1
 MEAN                          4.      6.650       0.08       0.51      0.180
 MINIMUM                       1.      5.600       0.02                      
 DATE OF MINIMUM       1982-05-25 1984-02-10 1984-02-10                      
 10TH PERCENTILE                                                             
 MEDIAN                        4.      6.400       0.10                      
 90TH PERCENTILE                                                             
 MAXIMUM                       9.      8.200       0.10                      
 DATE OF MAXIMUM       1982-05-13 1982-05-13 1982-05-25                      
 STANDARD DEVIATION            3.      1.100       0.04                      





 STATION - SIO RIVER                                STATION NO. 112009
 COUNTRY - KENYA                                    DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 00/21/17  LONG. 034/10/58  ELEVATION(M)9999.9
 REGIONAL CENTRE - AFRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-05-13 TO 1984-10-03

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC      NO3-N          F        ALK         pH
                             COND                  DISS      TOTAL           
                            02041      07306      09105      10101      10302
                            us/cm     mg/L N     mg/L F       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          1          4          5          5
 MEAN                        134.       1.50        0.2      51.20        7.5
 MINIMUM                      90.                   0.2      30.00        7.2
 DATE OF MINIMUM       1983-02-15            1984-02-07 1982-05-13 1982-05-13
 10TH PERCENTILE                                                             
 MEDIAN                      120.                   0.2      58.00        7.4
 90TH PERCENTILE                                                             
 MAXIMUM                     200.                   0.2      64.00        7.8
 DATE OF MAXIMUM       1982-05-13            1983-02-15 1984-10-03 1984-02-07
 STANDARD DEVIATION           41.                   0.0      14.67        0.2




                               Mg    P ORTHO   SULPHATE         Cl         Ca
                             DISS      TOTAL                  DISS       DISS
                            12103      15205      16302      17201      20101
                          mg/L Mg     mg/L P   mg/L SO4    mg/L Cl    mg/L Ca


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4          3          2          4          4
 MEAN                          5.      0.027         2.         3.      6.400
 MINIMUM                       3.                               2.      1.600
 DATE OF MINIMUM       1982-05-13                       1983-07-29 1983-07-29
 10TH PERCENTILE                                                             
 MEDIAN                        6.                               3.      7.600
 90TH PERCENTILE                                                             
 MAXIMUM                       7.                               6.      8.800
 DATE OF MAXIMUM       1984-02-07                       1984-02-07 1983-02-15
 STANDARD DEVIATION            2.                               2.      3.266




                               Mn         Fe         Fe
                             DISS      TOTAL       DISS
                            25104      26004      26104
                          mg/L Mn    mg/L Fe    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        2          1          2
 MEAN                        0.05       0.15       4.75
 MINIMUM                                               
 DATE OF MINIMUM                                       
 10TH PERCENTILE                                       
 MEDIAN                                                
 90TH PERCENTILE                                       
 MAXIMUM                                               
 DATE OF MAXIMUM                                       
 STANDARD DEVIATION                                    





 STATION - NZOIA RIVER                              STATION NO. 112010
 COUNTRY - KENYA                                    DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 00/14/12  LONG. 034/22/35  ELEVATION(M)9999.9
 REGIONAL CENTRE - AFRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-05-13 TO 1984-10-03

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      NO3-N        NH3          F
                             COND                                        DISS
                            02041      02062      07306      07555      09105
                            us/cm      deg C     mg/L N     mg/L N     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        5          4          1          1          4
 MEAN                        140.       21.0       6.00       0.60        0.2
 MINIMUM                     110.       20.0                              0.2
 DATE OF MINIMUM       1983-07-29 1984-02-07                       1983-07-29
 10TH PERCENTILE                                                             
 MEDIAN                      140.       21.0                              0.2
 90TH PERCENTILE                                                             
 MAXIMUM                     170.       22.0                              0.3
 DATE OF MAXIMUM       1984-02-07 1983-07-29                       1984-02-07
 STANDARD DEVIATION           22.        0.8                              0.1




                              ALK         pH         Na         Mg    P ORTHO
                            TOTAL                  DISS       DISS      TOTAL
                            10101      10302      11105      12103      15205
                             mg/L   pH UNITS    mg/L Na    mg/L Mg     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          5          1          4          3
 MEAN                       57.00        7.4         6.         5.      0.040
 MINIMUM                    38.00        7.3                    2.           
 DATE OF MINIMUM       1983-07-29 1982-05-13            1983-07-29           
 10TH PERCENTILE                                                             
 MEDIAN                     65.00        7.4                    4.           
 90TH PERCENTILE                                                             
 MAXIMUM                    68.00        7.6                    8.           
 DATE OF MAXIMUM       1984-02-07 1983-07-29            1983-02-14           
 STANDARD DEVIATION         13.30        0.1                    3.           




                         SULPHATE         Cl         Ca         Mn         Fe
                                        DISS       DISS      TOTAL      TOTAL
                            16302      17201      20101      25004      26004
                         mg/L SO4    mg/L Cl    mg/L Ca    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        1          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2          5          4          3          3
 MEAN                          1.         7.     10.450       0.27       2.58
 MINIMUM                                  2.      6.400                      
 DATE OF MINIMUM                  1983-07-29 1983-07-29                      
 10TH PERCENTILE                                                             
 MEDIAN                                   7.     11.200                      
 90TH PERCENTILE                                                             
 MAXIMUM                                 11.     13.000                      
 DATE OF MAXIMUM                  1984-02-07 1982-05-13                      
 STANDARD DEVIATION                       3.      3.117                      




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES        4
 MEAN                        66.8
 MINIMUM                     18.1
 DATE OF MINIMUM       1984-02-07
 10TH PERCENTILE                 
 MEDIAN                      61.0
 90TH PERCENTILE                 
 MAXIMUM                    127.0
 DATE OF MAXIMUM       1982-05-13
 STANDARD DEVIATION          52.6





 STATION - GUCHA MIGORI RIVER                       STATION NO. 112011
 COUNTRY - KENYA                                    DEPTH(M)    9999.9
 LOCATION - OCT. 8  LAT. 01/00/10  LONG. 034/14/59  ELEVATION(M)9999.9
 REGIONAL CENTRE - AFRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1984-03-22 TO 1984-11-26

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        ALK         pH         Cl
                             COND      TOTAL                  DISS
                            02041      10101      10302      17201
                            us/cm       mg/L   pH UNITS    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES        3          2          2          2
 MEAN                        102.      34.00        7.0         5.
 MINIMUM                                                          
 DATE OF MINIMUM                                                  
 10TH PERCENTILE                                                  
 MEDIAN                                                           
 90TH PERCENTILE                                                  
 MAXIMUM                                                          
 DATE OF MAXIMUM                                                  
 STANDARD DEVIATION                                               




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Last updated: 2001-07-30