function echarts_6() {
    // 初始化 ECharts 实例
    var myChart = echarts.init(document.getElementById('echart6'));

    const data = Chart6_Data;

    var series = [];
    const itemStyle = {
        opacity: 0.8,
        shadowBlur: 10,
        shadowOffsetX: 0,
        shadowOffsetY: 0,
        shadowColor: 'rgba(0,0,0,0.3)'
    };
    data.forEach((m) => {
        series.push({
                name: m.name,
                type: 'scatter',
                itemStyle: itemStyle,
                data: m.value
            }
        )
    });

    const schema = [
        {name: 'date', index: 0, text: '日'},
        {name: 'AQIindex', index: 1, text: 'AQI指数'},
        {name: 'AQIText', index: 2, text: '污染程度'},
    ];
    option = {
        color: ['#dd4444', '#fec42c', '#80F1BE'],
        legend: {
            top: 10,
            data: ['北京', '上海', '广州'],
            textStyle: {
                fontSize: 16,
                color: '#fff' // 设置图例文字颜色为白色
            }
        },
        grid: {
            left: '10%',
            right: 150,
            top: '18%',
            bottom: '10%'
        },
        tooltip: {
            backgroundColor: 'rgba(255,255,255,0.7)',
            formatter: function (param) {
                var value = param.value;
                // prettier-ignore
                return '<div style="border-bottom: 1px solid rgba(255,255,255,.3); font-size: 18px;padding-bottom: 7px;margin-bottom: 7px">'
                    + param.seriesName
                    + '</div>'
                    + schema[1].text + '：' + value[1] + '<br>'
                    + schema[2].text + '：' + value[2] + '<br>';
            }
        },
        xAxis: {
            type: 'value',
            name: '日期',
            nameGap: 16,
            nameTextStyle: {
                fontSize: 16
            },
            max: 31,
            splitLine: {
                show: false
            },
            show: false
        },
        yAxis: {
            type: 'value',
            name: 'AQI指数',
            nameLocation: 'end',
            nameGap: 20,
            nameTextStyle: {
                fontSize: 16
            },
            splitLine: {
                show: false
            },
            axisLine: {
                lineStyle: {
                    color: "rgba(255,255,255,.6)",
                    fontSize: '12',
                }
            }
        },
        visualMap: [
            {
                left: 'right',
                top: '10%',
                dimension: 1,
                min: 0,
                max: 250,
                itemWidth: 30,
                itemHeight: 120,
                calculable: true,
                precision: 0.1,
                text: ['圆形大小：AQI指数'],
                textGap: 30,
                inRange: {
                    symbolSize: [10, 70]
                },
                outOfRange: {
                    symbolSize: [10, 70],
                    color: ['rgba(255,255,255,0.4)']
                },
                controller: {
                    inRange: {
                        color: ['#c23531']
                    },
                    outOfRange: {
                        color: ['#999']
                    }
                },
                textStyle: { // 设置图例文字的样式
                    color: '#fff' // 设置图例文字颜色为白色
                },
            }
        ],
        series: series,
    };

    // 使用刚指定的配置项和数据显示图表。
    myChart.setOption(option);
    window.addEventListener("resize", function () {
        myChart.resize();
    });
}