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Piseco Lake Air Monitoring Site Trends (1987-2006)

Piseco Lake Acid Deposition Data, 1987 - 2006
Year Precip.
in
pH [SO4]
ippm
[NO3]
ippm
[NH4]
ippm
SO4 Dep.
kg/ha
NO3 Dep.
kg/ha
NH4 Dep.
kg/ha
87
88 45.38 4.37 2.36 1.34 0.28
89 54.76 4.29 1.86 1.48 0.51 25.82 20.59 7.08
90 64.72 4.26 2.20 1.62 0.34 36.12 26.62 5.63
91 40.11 4.20 2.48 1.87 0.35 25.23 19.08 3.57
92 47.97 4.25 2.24 1.59 0.29 27.26 19.43 3.56
93 46.72 4.29 2.03 1.57 0.29 24.06 18.58 3.50
94 40.33 4.35 2.04 1.55 0.34 20.92 15.84 3.50
95 40.39 4.33 1.82 1.64 0.35 18.69 16.85 3.62
96 53.51 4.40 1.66 1.31 0.29 22.53 17.79 3.99
97 39.05 4.35 1.67 1.63 0.33 16.58 16.18 3.24
98 37.40 4.40 1.65 1.56 0.33 15.67 14.78 3.14
99 36.45 4.41 1.42 1.32 0.22 13.16 12.25 2.00
00 54.81 4.32 1.44 1.52 0.29 19.97 21.21 4.06
01 39.56 4.43 1.29 1.51 0.28 13.00 15.21 2.78
02 50.13 4.54 1.34 1.33 0.27 17.03 16.99 3.49
03 54.66 4.59 1.21 1.30 0.34 16.49 18.33 4.96
04 46.64 4.58 1.42 1.10 0.27 16.86 13.09 3.23
05 48.94 4.70 0.91 1.16 0.32 12.01 16.86 4.68
06 66.83 4.76 0.98 0.69 0.23 17.11 11.85 4.02

Blanks indicate that the rainfall criteria were not satisfied. That is, analysis of at least 75% of the annual and 50% of the quarterly precipitation.