如何修改所有的label formatterecharts 折线配置项内容和展示

因为业务需求，我的图表获得的数据是这个样子的，如果直接{C}很难看，我想要只显示params.data[1]，所以我想修改所有的label.normal.formatter 数据，我该怎么实现，我看了很久的官方API，百度，谷歌，都没有找到想要的答案

      option = {
    title: {
        text: 'Awesome Chart'
    },
    legend:{
        data:['one','two']
    },
    xAxis: [{
        data: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
        gridIndex: 0
    }, {
        data: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
        gridIndex: 1
    }],
    label: {
        normal: {
            show: true,
            formatter: function(params) {
                return params.data[1];

            }
        }
    },
    yAxis: [{
        gridIndex: 0
    }, {
        gridIndex: 1
    }],
    series: [{
        name: 'one',
        type: 'line',
        data: [
            ['Sun', 100],
            ['Wed', 200]
        ],
        xAxisIndex:0,
        yAxisIndex:0
    }, {
        name:'two',
        type: 'line',
        data: [
            ['Mon', 100],
            ['Tue', 120],
            ['Sat', 200]
        ],
        xAxisIndex:0,
        yAxisIndex:0
    }, {
        name: 'one',
        type: 'line',
        data: [
            ['Sun', 100],
            ['Wed', 200]
        ],
        xAxisIndex:1,
        yAxisIndex:1
    }, {
        name:'two',
        type: 'line',
        data: [
            ['Mon', 100],
            ['Tue', 120],
            ['Sat', 200]
        ],
        xAxisIndex:1,
        yAxisIndex:1
    }],
    grid: [{
        x: "7%",
        y: "7%",
        height: "40%"
    }, {
        x: "7%",
        y2: "7%",
        height: "40%"
    }]
};