Table 5.  Summary statistics by month for water temperature, specific conductance, pH, and dissolved oxygen at Salado Creek [lower station] at San Antonio, Texas (08178800)

[°C, degrees Celsius; µS/cm, microsiemens per centimeter at 25 degrees Celsius; mg/L, milligrams per liter; --, monitor not in operation or probe malfunction during month]
Date
Temperature
(°C)
Specific
conductance
(µS/cm)
pH
(standard units)
Dissolved
oxygen
(mg/L)
Mini-
mum
Maxi-
mum
Mean
Mini-
mum
Maxi-
mum
Mean
Mini-
mum
Maxi-
mum
Mean
Mini-
mum
Maxi-
mum
Mean
Jan. 1996
  5.1
16.4
11.1
942
1,080
1,020
7.8
8.2
8.0
6.4
16.3
10.3
Feb. 1996
  4.6
21.2
13.9
558
1,150
1,070
7.8
8.2
7.9
4.4
14.8
  9.0
Mar. 1996
  8.9
21.8
15.3
512
1,080
959
7.8
8.4
8.0
4.5
16.7
  8.6
Apr. 1996
13.2
23.8
19.5
266
1,140
1,040
7.6
8.3
7.9
1.2
  9.4
  5.8
May 1996
19.0
27.3
24.6
417
1,170
908
7.6
8.1
7.8
    .80
  5.5
  2.7
June 1996
23.7
30.0
26.8
300
1,200
737
7.3
8.1
7.7
1.0
  8.3
  4.7
July 1996
26.2
30.9
27.7
502
1,130
782
7.3
8.1
7.6
    .60
  6.6
  2.9
Aug. 1996
25.0
29.8
26.8
218
1,170
783
7.5
8.5
7.8
    .70
11.6
  4.6
Sept. 1996
19.7
27.5
25.3
183
685
440
7.4
8.1
7.8
2.8
12.9
  7.8
Oct. 1996
16.4
23.0
20.5
532
1,160
888
7.6
8.0
7.8
2.4
  7.7
  4.7
Nov. 1996
10.6
23.0
16.7
260
1,280
924
7.6
8.0
7.9
1.5
10.8
  5.7
Dec. 1996
  5.3
17.0
12.3
400
852
634
7.6
8.1
7.8
3.9
10.5
  8.0
Jan. 1997
  3.3
19.0
10.7
438
965
824
7.7
8.2
7.9
5.6
15.0
10.3
Feb. 1997
  9.2
18.3
12.7
258
1,050
704
7.6
8.2
7.9
7.5
15.1
  9.9
Mar. 1997
14.1
21.4
18.0
290
859
621
7.7
8.0
7.8
3.9
  9.6
  6.8
Apr. 1997
14.6
21.9
18.2
169
992
640
7.7
9.0
8.0
5.6
  9.1
  7.5
May 1997
20.0
26.3
23.1
167
851
538
7.5
8.5
8.1
3.7
  6.4
  5.1
June 1997
22.4
28.0
25.7
158
757
453
7.4
8.2
7.8
4.1
  7.7
  5.7
July 1997
26.8
29.1
28.0
494
747
603
7.8
8.2
8.0
4.9
  8.0
  6.3
Aug. 1997
25.5
29.0
27.7
585
895
657
7.7
8.2
7.9
4.4
  7.8
  6.2
Sept. 1997
22.5
28.2
26.1
396
884
568
7.4
8.1
7.8
3.2
  9.2
  6.2
Oct. 1997
16.4
25.7
21.9
227
639
518
7.8
8.2
8.0
5.4
  9.2
  7.1
Nov. 1997
12.2
21.6
16.9
260
701
554
7.6
8.2
8.0
3.4
10.1
  8.1
Dec. 1997
  9.1
18.4
13.4
189
723
579
7.2
8.2
7.8
3.2
11.8
  8.5
Jan. 1998
12.8
20.3
16.3
204
721
573
7.5
8.4
8.1
3.4
12.4
  9.0
Feb. 1998
12.3
18.8
14.9
182
711
480
7.4
8.0
7.7
7.1
10.1
  8.6
Mar. 1998
11.4
22.8
17.0
171
973
666
7.5
8.1
7.8
6.2
14.6
  9.1
Apr. 1998
17.6
22.8
19.9
725
898
812
7.7
8.0
7.8
3.6
  8.3
  6.9
May 1998
19.4
27.9
24.4
724
985
885
7.7
8.1
7.9
2.0
  7.8
  4.8
June 1998
24.6
28.9
27.5
695
998
856
7.6
8.1
7.8
2.2
  4.5
  3.6
July 1998
26.3
29.7
28.0
774
940
883
7.6
8.1
8.0
--
--
--
Aug. 1998
24.6
29.2
27.3
130
981
481
7.4
8.2
7.7
2.3
  8.6
  5.5
Sept. 1998
23.8
28.2
26.4
207
846
582
7.3
8.0
7.7
4.1
  7.1
  5.3
Oct. 1998
18.0
27.5
22.8
  74.0
835
452
7.4
8.8
7.8
3.5
  8.2
  5.3
Nov. 1998
15.8
21.6
18.3
401
1,010
743
7.5
7.8
7.7
5.3
  8.9
  7.1
Dec. 1998
  7.8
22.1
14.7
812
1,130
947
7.6
8.3
7.9
5.6
10.5
  7.9

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