Environmental Engineering Reference
In-Depth Information
Table 9.2
Mean total N removed (all values in g m
-2
)
Cattail
Rush
Maidencane
Inorganic
Mixture
Waste
Inorganic
Mixture
Waste
Inorganic
Mixture
Waste
Date
Mean
SD Mean
SD Mean
SD Mean
SD Mean
SD Mean
SD Mean
SD Mean
SD Mean
SD
08/20/2001 59.6
c
∗
155.8
a
168.7
a
15.8
d
19.6
d
4.8
d
25.3
d
100.6
b
73.2
bc
26.9
51.1
44.7
3.4
4.0
3.0
14.7
13.9
46.4
10/15/2001 46.4
cd
112.5
a
97.3
ab
7.3
e
24.2
cde
2.5
e
18.7
de
55.0
cd
59.2
bc
41.8
48.5
43.2
2.4
11.0
1.5
3.8
12.3
11.0
46.2
a
60.9
a
11.4
a
03/14/2002 -
-
-
-
-
-
29.1
59.4
3.9
-
-
-
-
-
-
06/03/2002 144.1
abc
65.0
cde
176.4
a
49.7
de
46.5
de
3.6
e
85.4
bcde
157.7
ab
97.4
abcd
92.3
67.9
64.8
23.8
41.5
2.5
60.7
23.7
46.1
07/29/2002 79.1
ab
36.0
bc
84.8
ab
4.1
c
53.3
abc
102.2
a
46.6
abc
57.4
27.6
48.5
2.7
-
-
-
-
35.4
22.8
13.1
8.6
c
7.3
c
4.9
c
16.9
bc
79.2
a
46.3
ab
09/30/2002 20.3bc
10.8
-
4.1
5.9
-
-
-
-
7.7
25.6
24.3
349.5
cd
377.9
bc
534.5
a
128.0
ef
151.2
ef
22.3
f
199.6
de
494.7
ab
322.7
cd
Totals
∗
Letters denote T tests-Least Significant Difference (LSD) in the same row. Where letters are the same, means are not significantly different at the 0.05 level.
