Sample Marker XY Error Bars
CSS
/*CSS*/
HTML
JS
// JS
var chart = JSC.chart('chartDiv', {
  debug: true,
  title_label_text: 'X and Y error bars',
  legend_visible: false,
  series: [
    {
      type: 'marker',
      points: [
        {
          x: 5,
          y: 8,
          subvalue: {range: [  6,  9] },
          subvalueX: {range: [  3,  6] }
        },
        {
          x: 10,
          y: 12,
          subvalue: {offset: 5 },
          subvalueX: {percent: 10 }
        },
        {
          x: 15,
          y: 18,
          subvalue: {range: [  16,  19] },
          subvalueX: {range: [  13,  18] }
        }
      ]
    }
  ]
});
PHP