<chart palette="2" caption="Unit Sales" xAxisName="Month" yAxisName="Units" showValues="0" decimals="0" formatNumberScale="0" useRoundEdges="1">
  <set label="Jan" value="462" /> 
  <set label="Feb" value="857" /> 
  <set label="Mar" value="671" /> 
  <set label="Apr" value="494" /> 
  <set label="May" value="761" /> 
  <set label="Jun" value="960" /> 
  </chart>
怎么解析啊?大牛们帮帮忙