3202220212020202910281027102610251024102310221021102010290028002700260025002400230022002100200029991899179916991599149913991299119910991989188917891689158914891389128911891089197918791779167915791479137912791109876543210124測定地点／年度19724.5内湾Ｂ類型4.8内湾Ｃ類型運河測定地点／年度19854.1内湾Ｂ類型4.7内湾Ｃ類型8.0運河測定地点／年度19982.9内湾Ｂ類型3.4内湾Ｃ類型5.9運河測定地点／年度20112.9内湾Ｂ類型3.1内湾Ｃ類型5.6運河（ｍｇ／L）19735.16.08.919863.33.67.819993.13.76.220123.43.15.519744.15.27.419873.63.97.620003.23.66.520133.33.45.219753.33.67.519883.53.36.420013.53.56.420142.73.35.6東京湾ＣＯＤの経年変化（年度平均値）19763.13.96.619893.33.46.320023.53.96.120152.83.05.319773.64.06.419903.33.46.220033.53.85.920163.03.45.2内湾Ｂ類型内湾Ｃ類型19783.13.46.319913.03.45.920043.33.46.520173.53.96.819793.03.26.119922.83.25.920053.03.46.220182.93.65.5運河19803.13.35.519933.03.26.120063.13.35.920194.04.45.419813.54.05.919943.94.16.920072.83.36.120203.53.75.019823.03.76.319953.33.66.320082.73.06.120213.03.24.9（単位：ｍｇ／L）19833.44.16.519963.33.76.420092.83.26.120223.03.55.319843.54.47.319973.03.76.220103.13.46.420233.53.85.7…データ集■東京湾ＣＯＤの経年変化（年度平均値）
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