1978-1996 Phosphorus Concentrations
0
50
100
150
200
250
300
350
400
78
80
82
84
86
88
90
92
94
96
TP Conc (ppb)
0
50
100
150
200
250
300
78
80
82
84
86
88
90
92
94
96
TP Conc (ppb)
0
20
40
60
80
100
120
140
160
180
200
78
80
82
84
86
88
90
92
94
96
TP Conc (ppb)
0
5
10
15
20
25
30
35
78
80
82
84
86
88
90
92
94
96
TP Conc (ppb)
0
10
20
30
40
50
60
70
80
78
80
82
84
86
88
90
92
94
96
TP Conc (ppb)
0
20
40
60
80
100
120
140
78
80
82
84
86
88
90
92
94
96
TP Conc (ppb)
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