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` PollutrionValueVo pollutrionValueVo1 = new PollutrionValueVo();

                PollutrionValueVo pollutrionValueVo2 = new PollutrionValueVo();
                PollutrionValueVo pollutrionValueVo3 = new PollutrionValueVo();
                PollutrionValueVo pollutrionValueVo4 = new PollutrionValueVo();
                List<Double> COD = (List<Double>) map1.get("化学需氧量");
                List<Double> NOX = (List<Double>) map1.get("氮氧化物");
                List<Double> SO2 = (List<Double>) map1.get("二氧化硫");`