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Table 3

Observed averages and ranges (values in parentheses) of concentrations of water quality constituents measured in the three studied watersheds

WJ (agricultural, mg/L)JS (urban, mg/L)PYJ (mg/L)
BOD 4.90 (1.60 ∼ 26.1) 8.8 (1.90 ∼ 57.8) 8.0 (1.5 ∼ 43.0) 
COD 9.1 (3.60 ∼ 31.9) 10.2 (3.7 ∼ 50.6) 10.5 (4.6 ∼ 58.0) 
TOC 6.7 (3.40 ∼ 28.5) 7.8 (2.1 ∼ 57.5) 7.7 (2. 5 ∼ 30.8) 
SS 46.7 (3.1 ∼ 737.1) 353 (8.7 ∼ 4,025) 90.6 (3.1 ∼ 767) 
T-N 2.45 (1.02 ∼ 13.7) 2.38 (0.773 ∼ 5.83) 2.47 (0.703 ∼10.9) 
T-P 0.195 (0.015 ∼ 0.515) 0.238 (0.008 ∼ 1.79) 0.238 (0.023 ∼ 1.21) 
WJ (agricultural, mg/L)JS (urban, mg/L)PYJ (mg/L)
BOD 4.90 (1.60 ∼ 26.1) 8.8 (1.90 ∼ 57.8) 8.0 (1.5 ∼ 43.0) 
COD 9.1 (3.60 ∼ 31.9) 10.2 (3.7 ∼ 50.6) 10.5 (4.6 ∼ 58.0) 
TOC 6.7 (3.40 ∼ 28.5) 7.8 (2.1 ∼ 57.5) 7.7 (2. 5 ∼ 30.8) 
SS 46.7 (3.1 ∼ 737.1) 353 (8.7 ∼ 4,025) 90.6 (3.1 ∼ 767) 
T-N 2.45 (1.02 ∼ 13.7) 2.38 (0.773 ∼ 5.83) 2.47 (0.703 ∼10.9) 
T-P 0.195 (0.015 ∼ 0.515) 0.238 (0.008 ∼ 1.79) 0.238 (0.023 ∼ 1.21) 
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