.0 %}
					if({{forloop.counter0}} == perf_measure)
						st_dev = ' Â± ' + chart.series[perf_measure+3].data[this.point.index].y.toFixed(2);
					{% endif %}
					{% endfor %}
					{% endwith %}
                    return '<b>'+this.x +'</b><br/>'+
					this.series.name+' : '+ this.y.toFixed(2) + st_dev; 
					
                }
            },
            plotOptions: {
                column: {
                    pointPadding: 0.2,
                    borderWidth: 0
                }
				
            }