|
Table 21. Daily mean dissolved oxygen concentration,
Delaware River at Chester, Pa. (station number 01477050), for year ending
November 30, 2001 [Concentrations in milligrams per liter; --, missing data] |
||||||||
|
DAY |
APR |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
NOV |
|
|
|
|
|
|
|
|
|
|
|
1 |
10.5 |
9.2 |
6.9 |
4.5 |
5.4 |
5.1 |
6.2 |
7.6 |
|
2 |
10.5 |
9.1 |
7.2 |
5.5 |
5.4 |
5.3 |
6.2 |
7.6 |
|
3 |
10.6 |
-- |
7.2 |
6.1 |
5.6 |
5.5 |
6.2 |
7.5 |
|
4 |
10.5 |
9.1 |
7.8 |
6.5 |
5.4 |
-- |
6.1 |
7.4 |
|
5 |
-- |
8.9 |
8.2 |
6.4 |
5.3 |
5.4 |
6.1 |
7.4 |
|
6 |
10.3 |
9.1 |
8.5 |
6.6 |
5.1 |
5.5 |
6.3 |
7.5 |
|
7 |
10.3 |
9.4 |
8.0 |
7.0 |
5.1 |
5.5 |
6.4 |
7.7 |
|
8 |
10.3 |
9.5 |
7.6 |
7.1 |
5.0 |
-- |
6.7 |
7.6 |
|
9 |
10.3 |
9.3 |
7.2 |
7.0 |
4.9 |
-- |
6.9 |
7.6 |
|
10 |
10.1 |
9.0 |
6.7 |
6.9 |
4.8 |
-- |
6.9 |
7.7 |
|
11 |
10.0 |
8.6 |
6.4 |
6.6 |
4.3 |
5.2 |
6.9 |
7.9 |
|
12 |
9.9 |
8.1 |
5.9 |
6.4 |
4.0 |
5.2 |
6.9 |
8.1 |
|
13 |
-- |
7.7 |
5.5 |
6.1 |
3.9 |
5.4 |
6.8 |
8.1 |
|
14 |
-- |
7.4 |
5.1 |
6.0 |
3.7 |
5.4 |
6.9 |
8.2 |
|
15 |
-- |
7.0 |
4.7 |
5.9 |
3.8 |
5.5 |
6.9 |
8.2 |
|
16 |
9.8 |
6.8 |
4.5 |
5.7 |
3.9 |
5.6 |
6.8 |
8.2 |
|
17 |
9.8 |
6.8 |
-- |
5.4 |
4.3 |
5.5 |
7.1 |
8.3 |
|
18 |
9.9 |
6.6 |
-- |
5.2 |
4.3 |
5.5 |
7.2 |
8.4 |
|
19 |
9.9 |
6.2 |
3.7 |
5.2 |
4.2 |
5.3 |
7.2 |
8.3 |
|
20 |
9.8 |
6.2 |
3.7 |
5.2 |
4.2 |
5.4 |
7.2 |
8.4 |
|
21 |
9.7 |
6.5 |
3.6 |
5.0 |
4.3 |
5.4 |
7.2 |
8.5 |
|
22 |
9.5 |
6.4 |
3.9 |
5.0 |
-- |
5.2 |
7.0 |
8.6 |
|
23 |
9.5 |
5.9 |
4.0 |
5.1 |
-- |
4.9 |
7.0 |
8.5 |
|
24 |
9.4 |
5.2 |
3.8 |
5.2 |
4.5 |
5.0 |
6.9 |
8.5 |
|
25 |
9.3 |
5.3 |
3.6 |
5.3 |
4.6 |
5.4 |
6.9 |
8.6 |
|
26 |
9.3 |
5.8 |
3.5 |
5.2 |
4.9 |
5.3 |
7.2 |
8.5 |
|
27 |
9.2 |
6.2 |
3.5 |
5.2 |
5.2 |
-- |
7.5 |
8.3 |
|
28 |
9.2 |
5.7 |
3.5 |
5.2 |
5.1 |
5.3 |
7.6 |
8.1 |
|
29 |
9.2 |
5.9 |
3.7 |
5.2 |
5.2 |
5.4 |
7.7 |
8.1 |
|
30 |
9.2 |
6.2 |
4.1 |
5.4 |
5.2 |
6.0 |
7.6 |
8.1 |
|
31 |
|
6.6 |
|
5.5 |
5.2 |
|
7.7 |
|
|
Mean |
9.8 |
7.3 |
5.4 |
5.8 |
4.7 |
5.4 |
6.9 |
8.1 |
|
Max |
10.6 |
9.5 |
8.5 |
7.1 |
5.6 |
6.0 |
7.7 |
8.6 |
|
Min |
9.2 |
5.2 |
3.5 |
4.5 |
3.7 |
4.9 |
6.1 |
7.4 |