': data.timeline[n] + ''
                        },
                        series: {
                            id: 'gridScatter',
                            name: data.timeline[n],
                            type: 'scatter',
                            itemStyle: itemStyle,
                            data: data.series[n],
                            symbolSize: function(val) {
                                return sizeFunction(val[2]);
                            }
                        }
         