           splitLine: {
                            // show: false
                        }
                    },
                    series: [{
                        name: 'line',
                        type: 'line',
                        stack: 'all',
                        symbolSize: 10,
                        data: data1,
                        itemStyle: itemStyle,
                        smooth: true,
                        connectNulls: true
                    }, {
                      