关于雷达图，如何将label显示于拐点周围(外部)的问题echarts radar配置项内容和展示

不知道通过如何配置，才能将数值显于圆点的周围。像我的截图一样， 现在无论如何调，总有数据是在内容阴影区的。

       var option = {
			radar: {
				name: {
					textStyle: {
						color: '#3dabf7',
						fontSize: 16,
						height: 40,
						lineHeight: 40
					}
				},
				indicator: [
					{ name: '内容丰富', max: 10},
					{ name: '文笔强', max: 10},
					{ name: '充满想象', max: 10},
					{ name: '有趣', max: 10},
					{ name: '逻辑牛', max: 10}
				],
				center: ['50%', '54%'],
				axisLine: {
	                lineStyle: {
	                    color: 'rgba(255, 255, 255, 0)'
	                }
	            },
	            splitLine: {
	                lineStyle: {
	                    color: 'rgba(255, 255, 255, 1)'
	                }
	            },
				splitArea: {
	                areaStyle: {
	                    color: ['rgba(248,252,255, 1)',
	                    'rgba(225,243,255, 1)', 'rgba(198,233,255, 1)',
	                    'rgba(156,213,248, 1)', 'rgba(110,188,237, 1)'],
	                    shadowColor: 'rgba(0, 0, 0, 0.3)',
	                    //shadowBlur: 10
	                }
	            },
				radius: '75%'
			},
			series: [{
				name: '',
				type: 'radar',
				symbolSize:1,
				areaStyle: {normal: {
				 	color: "rgba(184,233,134, 0.4)",//区域颜色
				 	shadowColor: 'rgba(110, 0, 0, 0.3)'
				}},

				
				data : [
					{
						symbol:'circle'
						,symbolSize:8//拐点大小
						,itemStyle:
						{
							normal: {
								width:3,
							 	borderColor: '#FFFFFF'//#0dbf0d
							 	,borderWidth:1
							 	,color:'#7ED321'
							}
						}
						,value : [6.0, 6.0, 6.0, 6.0, 6.0]
						,label: {
	                        normal: {
	                            show: true,
	                            fontSize:15,
	                            //distance:40,
	                            //rotate:90,
	                            //offset:[-9,-3],
	                           	position: 'insideTopLeft',
	                           	//position: [-2, 2],
	                            color: '#7ED321',
	                            textBorderWidth:3,
	                            textBorderColor:'#ffffff',
	                            
	                            //align:'center',
	                            formatter:function(params) {
		                            if (params.value == 0)
		                            {
										return '';
			                        }
		                            else
		                            {
		                            	return params.value;
			                        }
	                            }
	                        }
						}
						,lineStyle:
						{
							normal:{color:'rgba(255, 255, 255, 1)',width:1}
						}
					}
				]
			}]
		};